Articles in Refereed Journals

In preparation, submitted

Study of  η and η' photoproduction at MAMI
V.L. Kashevarov, P. Ott, S. Prakhov, P. Adlarson, F. Afzal, C.S. Akondi,  J.R.M. Annand, H.J. Arends,  R. Beck,   N.S. Borisov, A. Braghieri, W.J. Briscoe,  S. Cherepnya, F. Cividini,  C. Collicott, S. Costanza, A. Denig, M. Dieterle, E.J. Downie, P. Drexler, M. Ferretti-Bondy, L.V. Fil’kov, A. Gardner, S. Garni, D.I. Glazier, D. Glowa, W. Gradl,  G.M. Gurevich, D. Hamilton,  D. Hornidge, G.M. Huber, T.C. Jude,  A. Käser,  S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V.V. Kulikov, A. Lazarev, J. Linuri, V. Lisin, K. Livingston,  I.J.D. MacGregor, R. Macrae, D.M. Manley, P.P. Martel,  M. Martemianov, J.C. McGeorge, E. McNicoll,  V. Metag, D.G. Middleton, R. Miskimen, E. Mornacchi, C. Mullen, A. Mushkarenkov,  A.B. Neganov, A. Neiser, A. Nikolaev,  M. Oberle, M. Ostrick, P. Ott, P.B. Otte,  D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, J. Robinson,  G. Ron, G. Rosner, T. Rostomyan, C. Sfienti, M.H. Sikora, V. Sokhoyan, K. Spieker, O. Steffen, I.I. Strakovsky, B. Strandberg, Th. Strub, I. Supek, A. Thiel, M. Thiel, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, N. Walford, D.P. Watts, D. Werthmüller, J. Wettig, L. Witthauer, M. Wolfes, R.L. Workman, and L. Zana.
( A2 Collaboration at MAMI)
(to be submitted to PRL)

Helicity-dependent cross sections and double-polarization observable E in η-photoproduction from quasi-free protons and neutrons
L. Witthauer, M. Dieterle, S. Abt,  P. Achenbach,, F. Afzal, Z. Ahmed, C.S. Akondi, J.R.M. Annand, H.J. Arends, M. Bashkanov,  R. Beck, M. Biroth, N.S. Borisov, A. Braghieri, W.J. Briscoe, F. Cividini, S. Costanza, C. Collicott, A. Denig,  E.J. Downie, P. Drexler, M.I. Ferretti-Bondy, S. Gardner, S. Garni, D.I. Glazier, D. Glowa, W. Gradl, M. Günther, G.M. Gurevich, D. Hamilton, D. Hornidge, G.M. Huber, A. Käser, V.L. Kashevarov, S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A.B. Lazarev, J.M. Linturi, V. Lisin, K. Livingston, S. Lutterer, I.J.D. MacGregor, J. Mancell, D.M. Manley, P.P. Martel, V. Metag, W. Meyer, R. Miskimen, E. Mornacchi, A. Mushkarenkov, A.B. Neganov, A. Neiser, M. Oberle, M. Ostrick, P.B. Otte, D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, G. Reicherz, G. Ron, T. Rostomyan, A. Sarty, C. Sfienti, M.H. Sikora, V. Sokhoyan, K. Spieker, O. Steffen, I.I. Strakovsky, Th. Strub, I. Supek, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, N.K. Walford, D.P. Watts, D. Werthmüller, J. Wettig, M. Wolfes, and L. Zana
A2 Collaboration at MAMI
(to be submitted to PRC)

Determination of the scalar polarizabilities of the proton using beam asymmetry Σ3 in Compton scattering
V. Sokhoyan, E.J. Downie, E. Mornacchi, J.A. McGovern, N. Krupina, F. Afzal, J. Ahrens, C.S. Akondi, J.R.M. Annand, H.J. Arends,  R. Beck,  A. Braghieri, W.J. Briscoe,  F. Cividini, C. Collicott, S. Costanza, A. Denig, M. Dieterle, M.I. Ferretti-Bondy, S. Gardner, S. Garni, D. Glazier, D. Glowa, W. Gradl,  G.M. Gurevich, D. Hamilton, D. Hornidge, G.M. Huber, A. Käser, V.L. Kashevarov,  I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V. Lensky, J.M. Linturi, V. Lisin, K. Livingston, I.J.D. MacGregor, R. Macrae, D.M. Manley, P.P. Martel,  D.G. Middleton, R. Miskimen, A. Mushkarenkov,  A. Neiser, M. Oberle, H. Ortega Spina, M. Ostrick, P. Ott, P.B. Otte, B. Oussena, D. Paudyal, P. Pedroni,  A. Polonski, V. Polyansky, S.N. Prakhov, A. Rajabi, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I.I. Strakovsky, B. Strandberg, Th. Strub, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, S. Wagner, D.P. Watts, J. Wettig, L. Witthauer, D. Werthmüller, M. Wolfes, and L. Zana
A2 Collaboration at MAMI
(submitted to EPJ A)

Measurements of the π0-->e+e- γ Dalitz decay at MAMI
P. Adlarson, F. Afzal, P. Aguar-Bartolomé, Z. Ahmed,  J.R.M. Annand, H.J. Arends,  K. Bantawa,   R. Beck,   H. Berghäuser, M. Biroth, N.S. Borisov, A. Braghieri, W.J. Briscoe,  S. Cherepnya, F. Cividini,  C. Collicott, S. Costanza, A. Denig, M. Dieterle, E.J. Downie, P. Drexler, M. Ferretti-Bondy, L.V. Fil’kov, A. Gardner, S. Garni, D.I. Glazier, D. Glowa, W. Gradl,  G.M. Gurevich, D. Hamilton,  D. Hornidge, G.M. Huber, T.C. Jude,  A. Käser, V.L. Kashevarov, S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V.V. Kulikov, A. Lazarev, J. Linuri, V. Lisin, K. Livingston,  I.J.D. MacGregor, R. Macrae, D.M. Manley, P.P. Martel,  M. Martemianov, J.C. McGeorge, E. McNicoll,  V. Metag, D.G. Middleton, R. Miskimen, E. Mornacchi, C. Mullen, A. Mushkarenkov,  A.B. Neganov, A. Neiser, A. Nikolaev,  M. Oberle, M. Ostrick, P. Ott, P.B. Otte,  D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, J. Robinson,  G. Ron, G. Rosner, T. Rostomyan, C. Sfienti, M.H. Sikora, V. Sokhoyan, K. Spieker, O. Steffen, I.I. Strakovsky, B. Strandberg, Th. Strub, I. Supek, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, N. Walford, D.P. Watts, D. Werthmüller, J. Wettig, L. Witthauer, M. Wolfes, and L. Zana.
( A2 Collaboration at MAMI)
(to be submitted to PRC)

 
Photon asymmetry measurements of γp--> π0p for Eγ= 320 - 650 MeV
S. Gardner, D. Howdle, M.H. Sikora, Y. Wunderlich, S. Abt, P. Achenbach, F. Afzal, Z. Ahmed, J.R.M. Annand, H.J. Arends, Ya.I. Azimov, K. Bantawa,  M. Bashkanov, R. Beck, V. Bekrenev, M. Biroth, H. Berghäuser, N.S. Borisov, A. Braghieri, W.J. Briscoe, J. Brudvik, S. Cherepnya, F. Cividini, S. Costanza, C. Collicott, B. Demissie,  A. Denig, M. Dieterle, E.J. Downie, P. Drexler, M. Ferretti-Bondy, L.V. Fil’kov, A. Fix, S. Garni, D.I. Glazier, W. Gradl, M. Günther,, G.M. Gurevich, D. Hamilton, E. Heid, D. Hornidge,  G.M. Huber, O. Jahn, T.C. Jude,  A. Käser, S. Kay, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A.A. Koulbardis, S.P. Kruglov, B. Krusche, J.M. Linuri, V. Lisin, K. Livingston, S. Lutterer, I.J.D. MacGregor, R. Macrae,  J. Mancell, D.M. Manley, P.P. Martel,  J.C. McGeorge, E. McNicoll,  V. Metag, W. Meyer, D.G. Middleton, R. Miskimen, C. Mullen, A. Mushkarenkov, B.M.K. Nefkens, A.B. Neganov, A. Neiser, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, R.O. Owens, P.B. Otte, B. Oussena, D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, J. Robinson,  G. Rosner, T. Rostomyan, A. Sarty, S. Schumann,  D. Sober, V. Sokhoyan, A. Starostin, O. Steffen, I.I. Strakovsky, B. Stradberg, Th. Strub, I.M. Suarez, I. Supek, C.M. Tarbert, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu.A. Usov, D.P. Watts, D. Werthmüller, J. Wettig, M. Wolfes, L. Zana, and L. Witthauer
(The Crystal Ball at MAMI and A2 Collaborations)
(to be submitted to EPJ A)
 
 


Published, accepted
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2017
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Measurements of the ω--> π0e+e- and  η-->e+eγ Dalitz decays with the A2 setup at the Mainz Microtron
P. Adlarson, F. Afzal, P. Aguar-Bartolomé, Z. Ahmed,  J.R.M. Annand, H.J. Arends,  K. Bantawa,   R. Beck,   H. Berghäuser, M. Biroth, N.S. Borisov, A. Braghieri, W.J. Briscoe,  S. Cherepnya, F. Cividini,  C. Collicott, S. Costanza, I.V. Danilkin,  A. Denig, M. Dieterle, E.J. Downie, P. Drexler, M. Ferretti-Bondy, L.V. Fil’kov, A. Gardner, D.I. Glazier, W. Gradl,  G.M. Gurevich, D. Hamilton, E. Heid, G.M. Huber, D. Hornidge,  I. Jaegle, O. Jahn, T.C. Jude,  V.L. Kashevarov, S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, J.M. Linuri, V. Lisin, K. Livingston,  I.J.D. MacGregor, R. Macrae, D.M. Manley, P.P. Martel,  J.C. McGeorge, E. McNicoll,  V. Metag, D.G. Middleton, R. Miskimen, A. Mushkarenkov,  A.B. Neganov, A. Neiser, A. Nikolaev,  M. Oberle, M. Ostrick, P. Ott, P.B. Otte, B. Oussena, D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, J. Robinson,  G. Ron, G. Rosner, T. Rostomyan, A. Sarty, S. Schumann,  C. Sfienti, M.H. Sikora, V. Sokhoyan, K. Spieker, O. Steffen, I.I. Strakovsky, B. Strandberg, Th. Strub, I. Supek, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, N. Walford, D.P. Watts, D. Werthmüller, J. Wettig, L. Witthauer, M. Wolfes, and L. Zana.
( A2 Collaboration at MAMI)
(Phys. Rev. C 95, 035208)

pdfPhysRevC.95.035208.pdf


Determination of the scalar polarizabilities of the proton using beam asymmetry Σ3 in Compton scattering
V. Sokhoyan, E.J. Downie, E. Mornacchi, J.A. McGovern, N. Krupina, F. Afzal, J. Ahrens, C.S. Akondi, J.R.M. Annand, H.J. Arends,  R. Beck,  A. Braghieri, W.J. Briscoe,  F. Cividini, C. Collicott, S. Costanza, A. Denig, M. Dieterle, M.I. Ferretti-Bondy, S. Gardner, S. Garni, D. Glazier, D. Glowa, W. Gradl,  G.M. Gurevich, D. Hamilton, D. Hornidge, G.M. Huber, A. Käser, V.L. Kashevarov,  I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V. Lensky, J.M. Linturi, V. Lisin, K. Livingston, I.J.D. MacGregor, R. Macrae, D.M. Manley, P.P. Martel,  D.G. Middleton, R. Miskimen, A. Mushkarenkov,  A. Neiser, M. Oberle, H. Ortega Spina, M. Ostrick, P. Ott, P.B. Otte, B. Oussena, D. Paudyal, P. Pedroni,  A. Polonski, V. Polyansky, S.N. Prakhov, A. Rajabi, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I.I. Strakovsky, B. Strandberg, Th. Strub, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, S. Wagner, D.P. Watts, J. Wettig, L. Witthauer, D. Werthmüller, M. Wolfes, and L. Zana
A2 Collaboration at MAMI
(EPJ A)
(Eur. Phys. J. A (2017) 53: 14)  
doi:10.1140/epja/i2017-12203-0
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2016


Photoproduction of ηπ- pairs off nucleons and deuterons
A. Käser, F. Müller, J. Ahrens, J.R.M. Annand, H.J. Arends, K. Bantawa,  P.A. Bartolomé, R. Beck, A. Braghieri, W.J. Briscoe,  S. Cherepnya, S. Costanza, M. Dieterle,  E.J. Downie, P. Drexler, L.V. Fil’kov, A. Fix, S. Garni, D.I. Glazier, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, I. Jaegle, T.C. Jude,  V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides,  J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D.G. Middleton, A. Mushkarenkov, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, P. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S.N. Prakhov, J. Robinson,  T. Rostomyan, S. Schumann, M.H. Sikora, D. Sober, A. Starostin, Th. Strub, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, N. Walford, D.P. Watts, D. Werthmüller, L. Witthauer
(The A2 Collaboration)
EPJ A 52 (2016) 272


New insight in the nature of the narrow structure in η-photoproduction on the neutron from the helicity dependence of the production process
L. Witthauer, M. Dieterle, S. Abt,  P. Achenbach,, F. Afzal, Z. Ahmed, J.R.M. Annand, H.J. Arends, M. Bashkanov,  R. Beck, M. Biroth, N.S. Borisov, A. Braghieri, W.J. Briscoe, F. Cividini, S. Costanza, C. Collicott, A. Denig,  E.J. Downie, P. Drexler, M.I. Ferretti-Bondy, S. Gardner, S. Garni, D.I. Glazier, D. Glowa, W. Gradl, M. Günther, G.M. Gurevich, D. Hamilton, D. Hornidge, G.M. Huber, A. Käser, V.L. Kashevarov, S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A.B. Lazarev, J.M. Linturi, V. Lisin, K. Livingston, S. Lutterer, I.J.D. MacGregor, J. Mancell, D.M. Manley, P.P. Martel, V. Metag, W. Meyer, R. Miskimen, E. Mornacchi, A. Mushkarenkov, A. Nikolaev, A.B. Neganov, A. Neiser, M. Oberle, M. Ostrick, P.B. Otte, D. Paudyal, P. Pedroni,  A. Polonski, S.N. Prakhov, A. Rajabi, G. Reicherz, G. Ron, T. Rostomyan, A. Sarty, M.H. Sikora, V. Sokhoyan, K. Spieker, O. Steffen, I.I. Strakovsky, Th. Strub, I. Supek, A. Thiel, M. Thiel, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, N.K. Walford, D.P. Watts, D. Werthmüller, J. Wettig, M. Wolfes, and L. Zana
A2 Collaboration at MAMI
(accepted by PRL)

T and F asymmetries in π0 Photoproduction on the Proton
J.R.M. Annand, H. J. Arends, R. Beck, N. Borisov, A. Braghieri, W.J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E.J. Downie, M. Dieterle, A. Fix, L.V. Fil’kov, S. Garni, D.I. Glazier, W. Gradl, G. Gurevich, P. Hall Barrientos, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I.J.D. MacGregor, J. Mancel, D.M. Manley, P. Martel, E.F. McNicoll, W. Meyer, D.G. Middleton, R. Miskimen, A. Mushkarenkov, A. Neganov, A. Nikolaev, M. Oberle, H. Ortega, M. Ostrick, P. Ott, P.B. Otte, B. Oussena, P. Pedroni, A. Polonski, V.V. Polyansky, S.N. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I.I. Strakovsky, Th. Strub,  I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov, D.P. Watts, D. Werthmüller, L. Witthauer, and M. Wolfes
A2 Collaboration at MAMI
Phys.Rev. C 93, 055209 (2016) 

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2015


Threshold π0 Photoproduction on Transverse Polarized Protons at MAMI
S. Schumann, P.B. Otte, C.S. Acondi, J.R.M. Annand, H. J. Arends, R. Beck, A. Bernstein, N. Borisov, A. Braghieri, W.J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E.J. Downie, M. Dieterle, C. Fernandez-Ramírez, A. Fix, L.V. Fil’kov, S. Garni, D.I. Glazier, W. Gradl, G. Gurevich, P. Hall Barrientos, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I.J.D. MacGregor, J. Mancel, D.M. Manley, P. Martel, E.F. McNicoll, W. Meyer, D.G. Middleton, R. Miskimen, A. Mushkarenkov, B.M.K. Nefkens, A. Neganov, A. Nikolaev, M. Oberle, M. Ostrick, H. Ortega, P. Ott, B. Oussena, P. Pedroni, A. Polonski, V.V. Polyansky, S.N. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, O. Steffen, I.I. Strakovsky, Th. Strub,  I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov, D.P. Watts, D. Werthmüller, L. Witthauer, and M. Wolfes
A2 Collaboration at MAMI
Phys. Lett. B 750, 252 (2015)


Photoproduction of π0- pairs off protons and off neutrons
M. Dieterle, M. Oberle, J. Ahrens, J.R.M. Annand, H.J. Arends, K. Bantawa,  P.A. Bartolomé, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, S. Costanza, B. Demissie,  E.J. Downie, P. Drexler, L.V. Fil’kov, A. Fix, S. Garni, D.I. Glazier, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, G.M. Huber, O. Jahn, T.C. Jude,  A. Käser, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides,  J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D.G. Middleton, A. Mushkarenkov, A. Nikolaev, R. Novotny, M. Ostrick, P. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S.N. Prakhov, J. Robinson,  T. Rostomyan, S. Schumann, M.H. Sikora, D. Sober, A. Starostin, Th. Strub, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, N. Walford, D.P. Watts, D. Werthmüller, L. Witthauer
(The A2 Collaboration)
EPJ A51 (2015) 142


Measurement of π0 photoproduction on the proton at MAMI C
P. Adlarson, J.R.M. Annand, H. J. Arends, Ya.I. Azimov, R. Beck,  N. Borisov A. Braghieri, W.J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, B.T. Demissie, E.J. Downie, M. Dieterle, A. Fix, L.V. Fil’kov, S. Garni, D.I. Glazier, W. Gradl, G. Gurevich, P. Hall Barrientos, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, V.V. Kulikov, A. Lazarev, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancel, D.M. Manley,  Z. Marinides, P. Martel, M. Martemiano, J.C.D. McGeorge, E.F. McNicoll, W. Meyer, D.G. Middleton, R. Miskimen, A. Mushkarenkov,  A. Neganov, B.M.K. Nefkens, A. Neiser, A. Nikolaev, M. Oberle, H. Ortega, M. Ostrick,  P. Ott, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, V.V. Polyansky, S.N. Prakhov, G. Reicherz, J. Robertson, T. Rostomyan, A. Sarty, S. Schumann, A. Starostin, O. Steffen, I.I. Strakovsky, Th. Strub,  I. Supek, M.F. Taragin, M. Thiel, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov, S. Wagner, D.P. Watts, D. Werthmüller, J. Wettig, L. Witthauer,  M. Wolfes, R.L. Workman, and F. Zehr 
(A2 Collaboration at MAMI)
Phys. Rev. C 92, 024617 (2015)

The isospin structure of photoproduction of πη pairs from the nucleon in the threshold region
A. Käser, J. Ahrens, J.R.M. Annand, H.J. Arends, K. Bantawa,  P.A. Bartolomé, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, B. Demissie, M. Dieterle, E.J. Downie, P. Drexler, L.V. Fil’kov, A. Fix, D.I. Glazier, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, G.M. Huber, I. Jaegle, O. Jahn, T.C. Jude,  V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, S.P. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D.G. Middleton, A. Mushkarenkov, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, P. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S.N. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M.H. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer
Phys. Lett. B 748, 244 (2015)
 
First measurement of target and beam-target asymmetries in the  p-->π0ηp reaction
J.R.M. Annand, H. J. Arends, R. Beck,  N. Borisov A. Braghieri, W.J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E.J. Downie, M. Dieterle, A. Fix, L.V. Fil’kov, S. Garni, D.I. Glazier, G. Gurevich,W. Gradl, P. Hall Barrientos, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I.J.D. MacGregor,
J. Mancel, D.M. Manley, P. Martel, E.F. McNicoll, W. Meyer, D.G. Middleton, R. Miskimen, A. Mushkarenkov,  A. Neganov, A. Nikolaev, M. Oberle, H. Ortega, M. Ostrick,  P. Ott, P.B. Otte, B. Oussena,P. Pedroni, A. Polonski, V.V. Polyansky, S.N. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I.I. Strakovsky, Th. Strub,  I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov,D.P. Watts, D. Werthmüller, L. Witthauer, and M. Wolfes
(A2 Collaboration at MAMI)
Phys.Rev.C 91, 055208 (2015)
pdfPhysRevC.91.055208.pdf

Photoproduction of the ω meson near threshold
I. I. Strakovsky, S. Prakhov, Ya. I. Azimov, P. Aguar-Bartolom´e, J. R. M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, W. J. Briscoe, J. Brudvik,
S. Cherepnya, R. F. B. Codling, C. Collicott, S. Costanza, B. T. Demissie, E. J. Downie, P. Drexler, L. V. Fil’kov, A. Fix, D. I. Glazier, R. Gregor, D. J. Hamilton, E. Heid, D. Hornidge,
I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J. D. MacGregor,
Y. Maghrbi, D. M. Manley, Z. Marinides, J. C. McGeorge, E. F. McNicoll, D. Mekterovic, V. Metag, A. Mushkarenkov, B. M. K. Nefkens, A. Nikolaev, R. Novotny, H. Ortega, M. Ostrick,
P. Ott, P. B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, A. Starostin, I. M. Suarez, I. Supek, M. F. Taragin,
C. M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. P. Watts, D. Werthmüller, and F. Zehr
A2 Collaboration at MAMI
Phys.Rev.C 91, 045207 (2015)
Document download: 2015PRC91_045207.pdf

A new measurement of the neutron detection efficiency for the NaI Crystal Ball detector
M. Martemianov, V. Kulikov, B.T. Demissie, Z. Marinides C. S. Akondi, J. R. M. Annand, H. J. Arends, R. Beck, N. Borisov, A. Braghieri, W. J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E. J. Downie, M. Dieterle, M. I. Ferretti Bondy, L. V. Fil'kov, S. Garni, D. I. Glazier, D. Glowa, W. Gradl, G. Gurevich, D. Hornidge, G. M. Huber, A. Kaeser, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, J. M. Linturi, V. Lisin, K. Livingston, I. J. D. MacGregor, D. M. Manley, P. P. Martel, D. G. Middleton, R. Miskimen, A. Mushkarenkov, A. Neganov, A. Neiser, M. Oberle, M. Ostrick, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, A. Polonski, S. Prakhov, G. Ron, T. Rostomyan, A. Sarty, D. M. Schott, S. Schumann, V. Sokhoyan, O. Steffen, I. I. Strakovsky, Th. Strub, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, Yu. A. Usov, S. Wagner, D. P. Watts, J. Wettig, D. Werthmüller, L. Witthauer and M. Wolfes
A2 Collaboration at MAMI
JINST 10, T04001 (2015) 

Measurements of the Proton Spin-Polarizabilities with Double-Polarized Compton Scattering
P.P.Martel, R. Miskimen, P. Aguar Bartolomé, J. Ahrens, C.S. Akondi, J.R.M. Annand, H.-J. Arends, W. Barnes, R. Beck, V. Bekrenev,  H. Berghäuser, A. Bernstein, M. Biroth, N. Borisov, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, C. Collicot, S. Costanza, B.T. Demissie, A. Denig, M. Denissenya, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, A. Fix, K. Föhl, S. Garni, S.B. Gerasimov, D. Glazier, P. Grabmayr, W. Gradl, R. Gregor, G. Gurevich, P. Hall Barrientos, D. Hamilton, K. Hansen, T. Hehl, E. Heid, D. Hornidge,  D. Howdle, G.M. Huber, L. Isaksson, I. Jaegle, O. Jahn, P. Jennewein, T.C. Jude, A. Käser, V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, D. Krambrich, J. Krimmer, S.P. Kruglov,  B. Krusche,  A. Kulbardis, M. Lang, B. Lemmer, V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor,  Y. Maghrbi, J. Mancell, D.M. Manley, M. Martinez Fabregate, D. Mekterovic, V. Metag,  W. Meyer,  D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Neganov, A. Nikolaev, R. Novotny,  M. Oberle, H. Ortega Spina, M. Ostrick,  P. Ott, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, V. Polyansky, S. Prakhov, A. Rajabi, G. Reicherz, T. Rostomyan, A. Sarty, S. Schrauff, B. Schröder, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, O. Steffen, I.M. Suarez, I. Supek,  C. Tarbert, M. Thiel, L. Tiator, A. Thomas, R. Troyer, M. Unverzagt, Y. Usov, D.P. Watts, D. Werthmüller, and L. Witthauer
A2 Collaboration
Phys. Rev. Lett. 114 (2015) 112501

________________________________________________________________________________________________________________________________________________________

2014

 
Silicon photomultiplier properties at cryogenic temperatures
M. Biroth, P. Achenbach, E. Downie, A. Thomas
Nucl.Instr.Meth. A (2014)

A low-noise and fast pre-amplifier and readout system for SiPMs
M.Biroth, P. Achenbach, E. Downie, A. Thomas
Nucl.Instr.Meth. A (2014)
 
Helicity dependence of the ³He-> preaction in the D(1232) resonance region
S.Costanza, A. Mushkarenkov, F. Rigamonti, M. Romaniuk, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck,  V. Bekrenev, H. Berghäuser, A. Braghieri, W. Briscoe,  S. Cherepna, C. Collicott, E.J. Downie, P. Drexler, L. Fil'kov,  A. Fix, G. Giardina, D. Glazier, D. Hamilton, E. Heid, W. Heil, D. Hornidge,  D. Howdle, I. Jaegle,  O. Jahn, T. Jude, V. Kashevarov, I. Keshelashvili, R. Kondratiev,  M. Korolija, J. Krimmer, B. Krusche, S. Kruglov, A. Kulbardis, V. Lisin, K. Livingston, J. Mancell, D. Middleton, I.J.D. MacGregor, D.M. Manley, J.C.. McGeorge, V. Metag,  B.M.K. Nefkens, A. Nikolaev, M. Oberle, M.Ostrick, H. Ortega,  P.B.Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov,  G. Rosner, T. Rostomyan,  S. Schumann,  A. Starostin, I. Supek,  M. Thiel, A. Thomas,  M. Unverzagt, D.P.Watts, D. Werthmüller
A2 Collaboration
EPJ A 50 (2014) 173

Measurement of the transverse target and beam-target asymmetries in hmeson photoproduction at MAMI
C.S. Akondi, J.R.M. Annand, H. J. Arends, R. Beck, A. Bernstein, N. Borisov A. Braghieri, W.J. Briscoe, S. Cherepnya, C. Collicott, E.J. Downie, L.V. Fil’kov, S. Garni, D.I. Glazier, G. Gurevich, W. Gradl, P. Hall Barrientos, D. Hamilton, D. Hornidge, D. Howdle, G.M. Huber, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I.J.D. MacGregor, J. Mancel, D.M. Manley, P. Martel, E.F. McNicoll, W. Meyer, D.G. Middleton, R. Miskimen, A. Mushkarenkov, B.M.K. Nefkens, A. Neganov, A. Nikolaev, M. Oberle, M. Ostrick, H. Ortega, P. Ott, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, V.V. Polyansky, S.N. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I.I. Strakovsky, Th. Strub,  I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu.A. Usov, D.P. Watts, D. Werthmüller, and M. Wolfes
A2 Collaboration at MAMI
Phys.Rev.Lett. 113, 102001 (2014)

A new measurement of the rare decay  h --> p0gg with the Crystal Ball/TAPS detectors at the Mainz Microtron
B.M.K. Nefkens, S. Prakhov, P. Aguar-Bartolomé, J. R. M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F. B. Codling, C. Collicott, S. Constanza, I.V. Danilkin, A. Denig, B. Demissie, M. Dieterle, E. J. Downie, P. Drexler, L. V. Fil’kov, A. Fix, D. I. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J. D. MacGregor, Y. Maghrbi, J. Mancel, D. M. Manley,  E. F. McNicoll, D. Mekterovic, V. Metag, A. Mushkarenkov,  A. Nikolaev, R. Novotny, M. Oberle, H. Ortega, M. Ostrick, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, A. Starostin, I. I. Strakovsky, I. M. Suarez, I. Supek, C. M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. P. Watts, D. Werthmüller, L. Witthauer, and F. Zehr 
The A2 Collaboration at MAMI
accepted for publication in PRC

Quasifree Photoproduction of h-mesons off Protons and Neutrons
D. Werthmüller, L. Witthauer, I. Keshelashvili, P. Aguar-Bartolomé, J. Ahrens, J.R.M. Annand, H.J. Arends, K. Bantawa,  R. Beck, V. Bekrenev, A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, B. Demissie, M. Dieterle, E.J. Downie, P. Drexler, L.V. Fil’kov, A. Fix, D.I. Glazier, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, G.M. Huber, I. Jaegle, O. Jahn, T.C. Jude, A. Käser, V.L. Kashevarov, R. Kondratiev, M. Korolija, S.P. Kruglov, B. Krusche, A. Kulbardis, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, V. Metag, D.G. Middleton, A. Mushkarenkov, B.M.K. Nefkens, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S.N. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M.H. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts
Crystal Ball/TAPS experiment at MAMI, TAPS, the A2 Collaboration
Phys.Rev.C 90, 015205 (2014)


Measurement of K+L photoproduction with fine center-of-mass energy resolution
T.C. Jude, D.I. Glazier, D.P. Watts, P. Aguar-Bartolomé, L.K. Akasoy, J.R.M. Annand, H.J. Arends , K. Bantawa, R. Beck, V.S. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W.J. Briscoe,J. Brudvik, S. Cherepnya, B.T. Demissie, M. Dieterle, E.J. Downie, L.V. Fil’kov, R. Gregor, E. Heid, D. Hornidge, I. Jaegle,O. Jahn, V.L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, A.A. Koulbardis, S.P. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor,Y. Maghrbi, D.M. Manley, Z. Marinides, T. Mart, M. Martinez, J.C. McGeorge, E.F. McNicoll, D.G. Middleton, A. Mushkarenkov, B.M.K. Nefkens, A. Nikolaev, V.A. Nikonov, M. Oberle, M. Ostrick, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron,A. Polonski, S. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, A.V. Sarantsev, S. Schumann, M.H. Sikora, D.I. Sober, A. Starostin, I. Strakovsky, I.M. Suarez, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D. Werthmüller, L. Witthauer, and F. Zehr
The Crystall Ball at MAMI Collaboration
Phys. Lett. B 735 (2014) 112

The neutron skin of 208Pb from coherent pion photoproduction
C.M. Tarbert, D.P. Watts, D.I. Glazier, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, V. Bekrenev, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, K. Föhl,  P. Grabmayr, R. Gregor, E. Heid, D. Hornidge, O. Jahn, V. Kashevarov, A. Knezevic, R. Kondratiev, M. Korolija, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor, D.M. Manley, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag, B. Nefkens, A. Nikolaev, R. Novotny, R.O. Owens, P. Pedroni, A. Polonski, S. Prakhov, J. Price, G. Rosner, M. Rost, T. Rostomyan, S. Schadmand, S. Schumann, D. Sober, A. Starostin, I. Supek, A. Thomas, M. Unverzagt, T. Walcher, F. Zehr
The Crystal Ball at MAMI and A2 Collaboration
PRL 112, 242502 (2014), chosen for an Editors’ Suggestion

A new determination of the h transition form factor in the Dalitz decay h --> e+e-g with the Crystal Ball/TAPS detectors at the Mainz Microtron
P. Aguar-Bartolomé, J. R. M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, W. J. Briscoe, J. Brudvik, S. Cherepnya, R. F. B. Codling, C. Collicott, A. Denig,
E. J. Downie, P. Drexler, L. V. Fil’kov, A. Fix, D. I. Glazier, R. Gregor, E. Heid, D. Hornidge, L. Isaksson, I. Jaegle, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Koulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I. J. D. MacGregor, Y. Maghrbi, D. M. Manley, J. C. McGeorge, E. F. McNicoll, D. Mekterovic, V. Metag,
A. Mushkarenkov, B. M. K. Nefkens, A. Nikolaev, R. Novotny, H. Ortega, M. Ostrick, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, D. I. Sober, A. Starostin, I. I. Strakovsky, I. M. Suarez, I. Supek, C. M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D. P. Watts, D. Werthmüller, and F. Zehr 
The A2 Collaboration at MAMI
PRC 89, 044608 (2014)

Determination of the mass with the Crystal Ball at MAMI-B
A. Nikolaev, P. Aguar-Bartolomé, J. Ahrens, J. R. M. Annand, H. J. Arends, R. Beck, V. Bekrenev, B. Boillat, A. Braghieri, D. Branford, W. J. Briscoe, J. W. Brudvik, S. Cherepnya, R. Codling, M. Dehn, E. J. Downie, L. V. Fil’kov, D. I. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, A. Jankowiak, K.-H. Kaiser, V. L. Kashevarov, R. Kondratiev, M. Korolija, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, U. Ludwig-Mertin, S. Lugert, I. J. D. MacGregor, D. M. Manley, M. Martinez-Fabregate, J. C. McGeorge, D. Mekterovic, V. Metag, B. M. K. Nefkens, R. Novotny, R. O. Owens, P. Pedroni, A. Polonski, S. N. Prakhov, J. W. Price, A. Reiter, G. Rosner, M. Rost, T. Rostomyan, S. Schumann, D. Sober, A. Starostin, I. Supek, C. M. Tarbert, A. Thomas, M. Unverzagt, Th. Walcher, D. P. Watts, F. Zehr
Crystal BAll Collaboration at MAMI
EPJ A50 (2014) 58

Photoproduction of p0-mesons off neutrons in the nucleon resonance region
M. Dieterle, I. Keshelashvili, J. Ahrens, J.R.M. Annand, H.J. Arends, K. Bantawa, P.A. Bartolome, R. Beck, V. Bekrenev, A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, B. Demissie, E.J. Downie, P. Drexler, L.V. Fil’kov, A. Fix, D.I. Glazier, D. Hamilton, E. Heid, D. Hornidge, D. Howdle, G.M. Huber, I. Jaegle, O. Jahn, T.C. Jude, A. Käser, V.L. Kashevarov, R. Kondratiev, M. Korolija, S.P. Kruglov, B. Krusche, A. Kulbardis, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D.G. Middleton, A. Mushkarenkov, B.M.K. Nefkens, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S.N. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M.H. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
PRL 112 (2014) 142001

Measurement of the beam-helicity asymmetry $I^{\circ}$% WIDTH=20 HEIGHT=15  in the photoproduction of $\pi^0$% WIDTH=21 HEIGHT=17 p+ --pairs off  protons and off neutrons 
M. Oberle, J. Ahrens,  J.R.M. Annand, H.-J. Arends,  K. Bantawa, P. Aguar Bartolomé, R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, B. Demissie, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, A. Fix, D. Glazier, E. Heid, D. Hornidge,  D. Howdle, G.M. Huber, O. Jahn, I. Jaegle, T.C. Jude, A. Käser, V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, A. Kulbardis, S.P. Kruglov,  B. Krusche,  V. Lisin, K. Livingston, I.J.D. MacGregor,  Y. Maghrbi, J. Mancell, D.M. Manley,  Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag,  S. Micanovic, D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Ostrick,  B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I. Supek,  M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer, F. Zehr
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
EPJ A 50 (2014) 54

Measurement of the 1H(g,p)p0 reaction using a novel nucleon spin polarimeter
M.H. Sikora, D.P. Watts, D.I Glazier, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, K. Bantawa, R. Beck,  V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe,  J. Brudvik, S. Cherepna, R.F.B. Codling, B.T. Demissie, E.J. Downie, P. Drexler, L. Fil'kov,  B. Freehart,  R. Gregor, D. Hamilton, E. Heid, D. Hornidge,  I. Jaegle,  O. Jahn, T. Jude, V. Kashevarov, I. Keshelashvili, R. Kondratiev,  M. Korolija, M.Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston,  I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, Z. Marinides, M. Martinez, J.C.. McGeorge, B. McKinnon,, E.F. McNicoll, D. Mekterovic, V. Metag,  S. Micanovic, D. Middleton, A. Mushkarenkov, B.M.K. Nefkens, A. Nikolaev, R. Novotny, M.Ostrick,  P.B.Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov,  J. Robinson, G. Rosner, T. Rostomyan,  S. Schumann,  D. Sober, A. Starostin, I.I. Strakovsky, I.M. Suarez, I. Supek,  M. Thiel, A. Thomas,  M. Unverzagt, D. Werthmüller,R.L. Workman, I. Zamboni, and F. Zehr
A2 Collaboration at MAMI
PRL 112, 022501 (2014)

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2013


Quasi-free photoproduction of h-mesons off  ³He
L. Witthauer, D. Werthmüller, I. Keshelashvili, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends,  K. Bantawa, R. Beck, V. Bekrenev,  A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, D. Demissie, M. Dieterle, E.J. Downie, P. Drexler, L.V. Fil'kov, A. Fix, D. Glazier,  E. Heid, D. Hornidge,  D. Howdle, G.M. Huber,  I. Jaegle, O. Jahn, T.C. Jude,  A. Käser, V. Kashevarov, R. Kondratiev,  M. Korolija,  S.P. Kruglov,  B. Krusche,  A. Kulbardis, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley,  Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, V. Metag,  D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Oberle, M. Ostrick,  B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, G. Rosner,  M. Rost, T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
EPJ A 49 (2013) 154

A narrow structure in the excitation function of h-photoproduction off the neutron
D. Werthmüller, L. Witthauer, I. Keshelashvili, J. Ahrens, J.R.M. Annand, H.-J. Arends,  K. Bantawa, P. Bartolomé, R. Beck, V. Bekrenev,  A. Braghieri, D. Branford, W.J. Briscoe, J. Brudvik, S. Cherepnya, D. Demissie, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, A. Fix, D. Glazier, D. Hamilton, E. Heid, D. Hornidge,  D. Howdle, G.M. Huber,  I. Jaegle, O. Jahn, T.C. Jude,  A. Käser, V. Kashevarov, R. Kondratiev,  M. Korolija,  S.P. Kruglov,  B. Krusche,  A. Kulbardis, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley,  Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag,   S. Micanovic, D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Oberle, M. Ostrick,  B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
PRL 111 (2013) 232001
Document download: 

In-medium modifications of the ω meson near the production threshold
M. Thiel, V. Metag,  P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends,  K. Bantawa,  R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri, W. Briscoe, J. Brudvik, S. Cherepnya, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, A. Fix, S. Friedrich, D. Glazier, R. Gregor, E. Heid, D. Hornidge,  O. Jahn,  T.C. Jude, V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, M. Kotulla,  B. Krusche, A. Kulbardis, B. Lemmer,  V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor,  Y. Maghrbi, J. Mancell, D.M. Manley,  M. Martinez, J.C. McGeorge, E. McNicoll,  D.G. Middleton, A. Mushkarenkov, M. Nanova, B. Nefkens, A. Nikolaev, R. Novotny,  M. Ostrick,  P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora,  A. Starostin, I. Supek,  A. Thomas, M. Unverzagt, D.P. Watts, J. Weil, D. Werthmüller, and I. Zamboni
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
EPJ A 49, 132 (2013)

Measurement of the K0 S+ reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron
P. Aguar-Bartolomé, J.R.M. Annand, H.-J. Arends,  K. Bantawa, C R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri, W. Briscoe, J. Brudvik, S. Cherepna, R.F.B. Codling,  M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, D. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge,  D. Howdle, L. Isaksson, I. Jaegle, O. Jahn, T.C. Jude,  V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, M. Kotulla, A. Kulbardis, S.P. Kruglov,  B. Krusche,  V. Lisin, K. Livingston, I.J.D. MacGregor,  Y. Maghrbi, J. Mancell, D.M. Manley,  E. McNicoll, D. Mekterovic, V. Metag,   A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Oberle, H. Ortega, M. Ostrick,  P. Ott, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I.I. Strakowsky, I.M. Suarez, I. Supek,  C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer, F. Zehr
The Crystal Ball at MAMI, TAPS, and A2 Collaborations
Phys.Rev. C88, 044601 (2013)

Accurate test of Chiral Dynamics in the gp --> p0p   reaction
.D. Hornidge, S. Prakhov, A.M. Bernstein, P. Aguar Bartolomé,  J.R.M. Annand, H.-J. Arends, R. Beck, H. Berghäuser, A. Braghieri, W. Briscoe,  S. Cherepna, E. Downie, P. Drexler, C. Fernández-Ramírez, L. Fil'kov,  D. Glazier, P. Hall Barrientos, E. Heid, M. Hilt, I. Jaeglé,  O. Jahn, T. Jude, V. Kashevarov, R. Kondratiev,  M. Korolija, D. Krambrich, B. Krusche, A.T. Laffoley, V. Lisin, K. Livingston, I.J.D. MacGregor, J. Mancell, D.M. Manley,  E.F. McNicoll, D. Mekterovic, V. Metag,  S. Micanovic, D. Middleton, K.W. Moores, A. Mushkarenkov, B.M.K. Nefkens, M. Ostrick, P.B.Otte, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, T. Rostomyan, S. Scherer, S. Schumann,  M.H. Sikora, A. Starostin, I. Supek,  M. Thiel, A. Thomas, L. Tiator, M. Unverzagt, and D.P.Watts
Crystal BAll Collaboration at MAMI
(2013) 062004 ,111 .Phys. Rev. Lett

Erratum: Test of Low-Energy Theorems for 1H(g,p0)1H in the Threshold Region
[Phys. Rev. Lett. 87, 232501 (2001)]
A. Schmidt et al.,

Double pion photoproduction off nuclei - are there effects beyond Final State Interaction? 
Y. Maghrbi, R. Gregor, S. Lugert, J. Ahrens,  J.R.M. Annand, H.-J. Arends,  R. Beck, V. Bekrenev,  B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, P. Drexler, L. Fil'kov, A. Fix, D. Glazier, E. Heid, D. Hornidge,  O. Jahn, I. Jaegle, V. Kashevarov, I. Keshelashvili, A. Knezevic, R. Kondratiev,  M. Korolija, M. Kotulla, D.Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, I.J.D. MacGregor,  D.M. Manley,  M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag,  B. Nefkens, A. Nikolaev, R. Novotny,  M. Ostrick,  P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Price,  G. Rosner, M. Rost, T. Rostomyan, S. Schadmand, S. Schumann,  D. Sober, A. Starostin, I. Supek,  A. Thomas, M. Unverzagt, D.P. Watts 
Phys. Lett. B 722 (2013) 69-75

Study of the partial wave structure of p0h photoproduction on protons
A. Fix, V.L. Kashevarov, M. Ostrick
Nucl. Phys. A 909 (2013) 1-7

First measurement of the helicity dependence for the g ³He interaction in the D(1232) resonance region
P. Aguar Bartolomé, A. Mushkarenkov, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck,  V. Bekrenev, H. Berghäuser, A. Braghieri, W. Briscoe,  S. Cherepna, S. Constanza, P. Drexler, L. Fil'kov,  A. Fix, G. Giardina, D. Glazier, D. Hamilton, E. Heid, W. Heil, D. Hornidge,  D. Howdle, I. Jaegle,  O. Jahn, T. Jude, V. Kashevarov, I. Keshelashvili, R. Kondratiev,  M. Korolija, J. Krimmer, B. Krusche, S. Kruglov, A. Kulbardis, V. Lisin, K. Livingston, J. Mancell, D. Middleton, I.J.D. MacGregor, D.M. Manley, J.C.. McGeorge, V. Metag,  B.M.K. Nefkens, A. Nikolaev, M. Oberle, H. Ortega, M.Ostrick, P.B.Otte, B. Oussena, P. Pedroni, F. Pheron, S. Prakhov, A. Polonski, F. Rigamonti, M. Romaniuk, G. Rosner, T. Rostomyan,  S. Schumann,   D. Sober, A. Starostin, I. Supek,  M. Thiel, A. Thomas,  M. Unverzagt, D.P.Watts, D. Werthmüller
Crystal BAll Collaboration at MAMI
Phys.Lett. B 723 (2013) 71-77
Document Download: pdfPLB29376.pdf457.44 KB

Measurements of 12C(g,pp) photon asymmetries for Eg =200-450 MeV
J. Robinson, I.J.D. MacGregor, J.R.M. Annand, P. Aguar Bartolomé, L.K. Akasoy, H.-J. Arends,  Ya.I. Azimov, K. Bantawa, R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepnya, R.F.B. Codling, B. Demissie, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, D. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge,  D. Howdle,  O. Jahn,  T.C. Jude, V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, M. Kotulla, A. Kulbardis, S.P. Kruglov,  B. Krusche,  V. Lisin, K. Livingston, D.M. Manley,  J.C. McGeorge, E. McNicoll,  V. Metag, D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Oberle, M. Ostrick,  R.O. Owens, P.B. Otte, B. Oussena, P. Pedroni,  A. Polonski, S. Prakhov,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I.I. Strakowsky, I.M. Suarez, I. Supek,  C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, and L. Witthauer
Crystal Ball at MAMI and A2 Collaborations
EPJ A 49 (2013) 65

Measurement of the beam-helicity asymmetry $I^{\circ}$% WIDTH=20 HEIGHT=15  in the photoproduction of $\pi^0$% WIDTH=21 HEIGHT=17 -pairs off the proton and off the neutron 
M. Oberle, J. Ahrens,  J.R.M. Annand, H.-J. Arends,  K. Bantawa, P. Aguar Bartolomé, R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, B. Demissie, M. Dieterle, E. Downie, P. Drexler, L. Fil'kov, A. Fix, D. Glazier, E. Heid, D. Hornidge,  D. Howdle, O. Jahn, I. Jaegle, T.C. Jude, A. Käser, V. Kashevarov, I. Keshelashvili,  R. Kondratiev,  M. Korolija, A. Kulbardis, S.P. Kruglov,  B. Krusche,  V. Lisin, K. Livingston, I.J.D. MacGregor,  Y. Maghrbi, J. Mancell, D.M. Manley,  Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag,  S. Micanovic, D.G. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny,  M. Ostrick,  B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson,  G. Rosner,  T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin, I. Supek,  M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer, F. Zehr
Phys. Lett. B 721 (2013) 237-243



Coherent photoproduction of p0- and h-mesons off  7Li
Y. Maghrbi, B. Krusche, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck,  V. Bekrenev, B. Boillat,  A. Braghieri, D. Branford, W. Briscoe,  J. Brudvik, S. Cherepna, R.F.B. Codling, E.J. Downie, P. Drexler, L. Fil'kov,  A. Fix,  D. Glazier, R. Gregor,  E. Heid,  D. Hornidge,  I. Jaegle,  O. Jahn, V. Kashevarov, I. Keshelashvili, A. Knezevic, R. Kondratiev,  M. Korolija, D. Krambrich, M. Lang, V. Lisin, K. Livingston, S. Lugert,  I.J.D. MacGregor, D.M. Manley, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag,  B.M.K. Nefkens, A. Nikolaev, R. Novotny, M.Ostrick,  P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J.W. Price, G. Rosner, M. Rost, T. Rostomyan,  S. Schadmand, S. Schumann,  D. Sober, A. Starostin, I. Supek,  C.M. Tarbert,  A. Thomas,  M. Unverzagt, D.P.Watts, D. Werthmüller
Crystal Ball Collaboration at MAMI
EPJ 49 (2013) 38


2012


Experimental study of the gp--> p0p0p reaction with the Crystal Ball/TAPS detector system at the Mainz Microtron
V.L. Kashevarov, A. Fix, S. Prakhov, P. Aguar Bartolomé,  J.R.M. Annand, H.-J. Arends, K. Bantawa, R. Beck, V. Bekrenev,  H. Berghäuser, A. Braghieri,  W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, P. Drexler, L. Fil'kov,  D. Glazier, R. Gregor, E. Heid, D. Hornidge,  L. Isaksson, O. Jahn, I. Jaegle, T.C. Jude, I. Keshelashvili, R. Kondratiev,  M. Korolija, M. Kotulla,  A. Kulbardis, S. Kruglov, B. Krusche,  V. Lisin, K. Livingston,  I.J.D. MacGregor, Y. Maghrbi, D.M. Manley,  J.C. McGeorge,  E.F. McNicoll, D. Mekterovic, V. Metag,  A. Mushkarenkov, B. Nefkens, A. Nikolaev,  R. Novotny, H. Ortega, M. Ostrick, P. Ott, P.B. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, J. Robinson,  G. Rosner, T. Rostomyan, S. Schumann,  M.H. Sikora, D. Sober, A. Starostin,I.I. Strakovsky, I.M. Suarez,  I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, and F. Zehr
(Crystal Ball at MAMI, TAPS, and A2 Collaborations)
Phys. Rev. C85, 064610 (2012)
 
Photoproduction of $\pi^0 \pi^0$% WIDTH=38 HEIGHT=17  - and $\pi^0 \pi^+$% WIDTH=41 HEIGHT=17  -pairs off the proton from threshold to the second resonance region 
F. Zehr, B. Krusche, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, V. Bekrenev,  B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, P. Drexler, L. Fil'kov,  D. Glazier, R. Gregor, E. Heid, D. Hornidge,  O. Jahn, I. Jaegle, V. Kashevarov, A. Knezevic,  R. Kondratiev,  M. Korolija, M. Kotulla, D. Krambrich, A. Kulbardis, M. Lang,  V. Lisin, K. Livingston,S. Lugert, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley,  M. Martinez, J.C. McGeorge,  D. Mekterovic, V. Metag,  B. Nefkens, A. Nikolaev,  P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Price,  G. Rosner,  M. Rost, T. Rostomyan, S. Schumann,  D. Sober, A. Starostin, I. Supek,  C.M. Tarbert, A. Thomas, M. Unverzagt, Th. Walcher, D.P. Watts
Eur.Phys.J. A48 (2012) 98
Document Download:   http://arxiv.org/abs/1207.2361

Coherent photoproduction of $\eta$% WIDTH=13 HEIGHT=28 -mesons off 3He - search for $\eta$% WIDTH=13 HEIGHT=28 -mesic nuclei 
F. Pheron, J. Ahrens, J.R.M. Annand, H.-J. Arends, K. Bantawa, P. Aguar Bartolomé, R. Beck, V. Bekrenev, H. Berghäuser, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, B. Demissie, M. Dieterle, E. Downie, P. Drexler, D. Glazier, E. Heid, L. Filkov, D. Hornidge, I. Jaegle, O. Jahn, T. Jude, V. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, J. Mancell, D.M. Manley, Z. Marinides, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny, M. Oberle, M. Ostrick, B. Oussena, P. Pedroni, A. Polonski, S. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I. Supek, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, L. Witthauer, F. Zehr
PLB 709 (2012) 21
Document Download:  [PDF (445kBytes)]
 
 
 
2011

Measurement of the helicity dependent total cross section for the $\gamma n\rightarrow p\pi^- \pi^0$% WIDTH=93 HEIGHT=33  reaction 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, M. Blackston, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, A. Fix, E. Heid, O. Jahn, F. Klein, R. Kondratiev, M. Lang, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, D. Protopopescu, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, G. Tamas, A. Thomas, H. Weller
EPJ A 47 (2011) 36
Document Download:  [PDF (275kBytes)]

A Polarized $^3$% WIDTH=11 HEIGHT=17 He Target for the Photon Beam at MAMI 
J. Krimmer, P. Aguar Bartolomé, J. Ahrens, S. Altieri, H.-J. Arends, W. Heil, S. Karpuk, E. Otten, P. Pedroni, Z. Salhi, A. Thomas
NIM A 648, 35 (2011)
Document Download:  [PDF (506kBytes)]

Determination of the $\eta$% WIDTH=13 HEIGHT=28 -transition form factor in the $\gamma p\rightarrow p\eta\rightarrow p\gamma e^+ e^-$% WIDTH=141 HEIGHT=33  reaction 
H. Berghäuser, V. Metag, A. Starostin, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, K. Bantawa, R. Beck, V. Bekrenev, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, E. Downie, P. Drexler, M. Dieterle, L. Filkov, A. Fix, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, T. Jude, V. Kashevarov, A. Knezevic, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, S. Micanovic, B. Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, R.O. Owens, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, S. Prakhov, G. Rosner, T. Rostomyan, S. Schumann, D. Sober, I.M. Suarez, I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, I. Zamboni, F. Zehr
Phys.Lett.B701:562-567,2011
Document Download:  [PDF (674kBytes)]


2010 

Radiative pi0 photoproduction on the proton in the Delta (1232) region 
S. Schumann, B. Boillat, E. Downie, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, V. Bekrenev, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, L. Filkov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, V. Kashevarov, R. Kondratiev, M. Korolija, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor, D.M. Manley, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag, B. Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, R.O. Owens, P. Pedroni, A. Polonski, S. Prakhov, J. Price, G. Rosner, M. Rost, T. Rostomyan, D. Sober, A. Starostin, I. Supek, C.M. Tarbert, A. Thomas, M. Unverzagt, T. Walcher, D.P. Watts, F. Zehr
CrystalBall@MAMI, TAPS and A2 Collaborations
EPJ A 43 (2010) 269
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Helicity dependence of the $\gamma d\rightarrow\pi NN$% WIDTH=85 HEIGHT=29  reactions in the $\Delta$% WIDTH=17 HEIGHT=15  resonance region 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, M. Blackston, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, A. Fix, E. Heid, O. Jahn, F. Klein, R. Kondratiev, M. Lang, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, D. Protopopescu, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, M. Schwamb, G. Tamas, A. Thomas, H. Weller GDH and A2 Collaborations
EPJ A 44, 189 (2010)
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Observation of the Higgs Boson of strong interaction via Compton scattering by the nucleon 
M. Schumacher (Résumé of an invited talk presented for the A2 Collaboration)
EPJ C 67 (2010) 283
Remarks: arXiv:1001.0500v2 [hep-ph] 15 Mar 2010
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Study of the $\gamma p\rightarrow \eta p$% WIDTH=62 HEIGHT=28  reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C) 
E. McNicoll, S. Prakhov, I. Strakowsky, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, Y. Azimov, R.E. Arndt, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, B. Demissie, E. Downie, P. Drexler, L. Filkov, A. Fix, B. Freehart, D. Glazier, R. Gregor, E. Heid, D. Hornidge, I. Jaegle, O. Jahn, T. Jude, V. Kashevarov, J.D. Kellie, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, I. Keshelashvili, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, Z. Marinides, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag, S. Micanovic, D. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, P. Otte, B. Oussena, M.W. Paris, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I.M. Suarez, I. Supek, M. Thiel, A. Thomas, L. Tiator, M. Unverzagt, D.P. Watts, D. Werthmüller, R.L. Workman, I. Zamboni, F. Zehr
Phys.Rev. C 82, 035208 (2010)
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Isobar model analysis of $\pi^0\eta$% WIDTH=29 HEIGHT=33  photoproduction on protons 
A. Fix, V. Kashevarov, A. Lee, M. Ostrick
Phys. Rev. C 82, 035207 (2010)
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Comment on "Polarizability of the pion: No conflict between dispersion theory and chiral perturbation theory"
L. Filkov, V. Kashevarov
Phys. Rev. C 81, 029801 (2010)
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First measurement of the circular beam asymmetry in the $\vec{\gamma} p\rightarrow \pi^0 \eta p$% WIDTH=79 HEIGHT=33  reaction 
V. Kashevarov, A. Fix, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, B. Demissie, E. Downie, P. Drexler, L. Filkov, D. Glazier, R. Gregor, D. Hamilton, E. Heid, D. Hornidge, I. Jaegle, O. Jahn, T. Jude, J.D. Kellie, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, D. Middleton, A. Mushkarenkov, B. Nefkens, A. Nikolaev, R. Novotny, M. Ostrick, P. Otte, B. Oussena, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I. Strakowsky, I.M. Suarez, I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, D. Werthmüller, I. Zamboni Crystal Ball at MAMI, TAPS and A2 Collaborations
Phys. Lett. B 693 (2010) 551
Remarks: arXiv: 1007.0777 [nucl-ex]
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Knockout of pn pairs from $^{16}O$% WIDTH=30 HEIGHT=17  with electromagnetic probes 
D. Middleton, J.R.M. Annand, . et al.
Eur.Phys.J A 43 (2010) 137
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Higher order forward spin polarizability 
B. Pasquini, P. Pedroni, D. Drechsel
Phys. Lett. B 687, (2010) 160
Document download: higher-order-spin-pol.pdf



2009

Determination of the Dalitz plot parameter $\alpha$% WIDTH=14 HEIGHT=14  for the decay $\eta\rightarrow 3\pi^0$% WIDTH=62 HEIGHT=33  with the Crystal Ball at MAMI-B 
M. Unverzagt, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, V. Bekrenev, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, L. Filkov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, V. Kashevarov, R. Kondratiev, M. Korolija, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor, D.M. Manley, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag, B. Nefkens, A. Nikolaev, R. Novotny, R.O. Owens, P. Pedroni, A. Polonski, S. Prakhov, J. Price, G. Rosner, M. Rost, T. Rostomyan, S. Schumann, D. Sober, A. Starostin, I. Supek, C.M. Tarbert, A. Thomas, T. Walcher, D.P. Watts, F. Zehr
EPJ A (2009) 169
Remarks: DOI 10.1140/epja/i2008-10710-7 
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Helicity dependence of the total inclusive cross section on the deuteron 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, M. Blackston, A. Braghieri, N. d'Hose, H. Dutz, E. Heid, O. Jahn, F. Klein, R. Kondratiev, M. Lang, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, D. Protopopescu, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, M. Schwamb, G. Tamas, A. Thomas, H. Weller
Phys. Lett. B 672 (2009) 328
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Measurement of the Slope Parameter $\alpha$% WIDTH=14 HEIGHT=14  for the $\eta\rightarrow 3 \pi^0$% WIDTH=62 HEIGHT=33  decay with the Crystal Ball at MAMI-C 
S. Prakhov, B. Nefkens, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, P. Drexler, L. Filkov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, T. Jude, V. Kashevarov, J.D. Kellie, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, D. Krambrich, S. Kruglov, B. Krusche, M. Lang, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, A. Nikolaev, R. Novotny, M. Ostrick, P. Otte, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, G. Rosner, M. Rost, T. Rostomyan, S. Schumann, M. Sikora, D. Sober, A. Starostin, I.M. Suarez, I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, I. Zamboni, F. Zehr
Phys. Rev. C 79, 035204 (2009)
Remarks: http://arxiv.org/abs/arXiv:0812.1999v2
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Search for the charge-conjugation-forbidden decay $\omega\rightarrow \eta\pi^0$% WIDTH=65 HEIGHT=33  
A. Starostin, B. Nefkens, J. Ahrens, J.R.M. Annand, H.-J. Arends, K. Bantawa, P. Aguar Bartolomé, R. Beck, V. Bekrenev, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, E. Downie, L. Filkov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, V. Kashevarov, A. Knezevic, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, M. Ostrick, P. Pedroni, F. Pheron, A. Polonski, S. Prakhov, J. Robinson, G. Rosner, M. Rost, S. Schumann, D. Sober, I.M. Suarez, I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts
PRC79 (2009) 065201
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Angular distribution of scattered electrons associated with collimated bremsstrahlung and the tagging technique 
L. Maximon, J. Ahrens, M. Dugger
NIM A 603 (2009) 268-275
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Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton 
D. Krambrich, F. Zehr, . et al.
PRL 103, 052002 (2009)
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Photoproduction of $\pi^0\eta$% WIDTH=29 HEIGHT=33  on protons and the $\Delta (1700)$% WIDTH=62 HEIGHT=31  D33 resonance 
V. Kashevarov, A. Fix, P. Aguar Bartolomé, L.K. Akasoy, J.R.M. Annand, H.-J. Arends, R. Beck, K. Bantawa, V. Bekrenev, H. Berghäuser, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, E. Downie, P. Drexler, L. Filkov, D. Glazier, R. Gregor, E. Heid, D. Hornidge, O. Jahn, T. Jude, A. Knezevic, R. Kondratiev, M. Korolija, M. Kotulla, A. Kulbardis, S. Kruglov, B. Krusche, V. Lisin, K. Livingston, I.J.D. MacGregor, Y. Maghrbi, D.M. Manley, M. Martinez, J.C. McGeorge, E. McNicoll, D. Mekterovic, V. Metag, S. Micanovic, B. Nefkens, R. Novotny, M. Ostrick, R.O. Owens, P. Pedroni, F. Pheron, A. Polonski, J. Robinson, S. Prakhov, G. Rosner, T. Rostomyan, S. Schumann, D. Sober, A. Starostin, I.M. Suarez, I. Supek, C.M. Tarbert, M. Thiel, A. Thomas, M. Unverzagt, D.P. Watts, I. Zamboni, F. Zehr
EPJ A 42 (2009) 141, DOI 10.1140/epja/i2009-10868-4
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2008

Incoherent neutral pion photoproduction on $^1^2C$% WIDTH=31 HEIGHT=17  
C.M. Tarbert, D.P. Watts, P. Aguar Bartolomé, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, V. Bekrenev, B. Boillat, A. Braghieri, D. Branford, W. Briscoe, J. Brudvik, S. Cherepna, R. Codling, E. Downie, K. Föhl, D. Glazier, P. Grabmayr, R. Gregor, E. Heid, D. Hornidge, O. Jahn, V. Kashevarov, A. Knezevic, R. Kondratiev, M. Korolija, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, V. Lisin, K. Livingston, S. Lugert, I.J.D. MacGregor, D.M. Manley, M. Martinez, J.C. McGeorge, D. Mekterovic, V. Metag, B. Nefkens, A. Nikolaev, R. Novotny, R.O. Owens, P. Pedroni, A. Polonski, S. Prakhov, J. Price, G. Rosner, M. Rost, T. Rostomyan, S. Schadmand, S. Schumann, D. Sober, A. Starostin, I. Supek, A. Thomas, M. Unverzagt, T. Walcher, F. Zehr Crystal Ball at MAMI and A2 collaborations
PRL 100, 132301 (2008)
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Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C 
J.C. McGeorge, J.D. Kellie, J.R.M. Annand, J. Ahrens, I. Anthony, A. Clarkson, E. McNicoll, P. Lumsden, A. Thomas, R.O. Owens, G. Rosner
EPJ A (2008)
Remarks: DOI 10.1140/epja/i2007-10606-0
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The Institute for Nuclear Physics at the University of Mainz -Laboratory Portrait 
H.-J. Arends, . et al.
Nucl. Phys. News 18,2, pp 5-11,2008
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Analysis of angular distributions in $\gamma N \rightarrow \pi^0 \eta N$% WIDTH=92 HEIGHT=33  
A. Fix, M. Ostrick, L. Tiator
Eur.Phys.J. A36, 61-72, (2008)
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Hadron structure at low $Q^2$% WIDTH=24 HEIGHT=33  
D. Drechsel, T. Walcher
Rev.Mod.Phys. 80, 731 (2008)
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2007

Dependence of the $^1^2C(\gamma,pd)$% WIDTH=76 HEIGHT=33  reaction on photon linear polarisation 
D.P. Watts, J.R.M. Annand, R. Beck, D. Branford, D. Glazier, P. Grabmayr, K. Livingston, I.J.D. MacGregor, J.C. McGeorge, R.O. Owens, G. Rosner
Phys. Lett. B 647 (2007) 88-92
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First measurement of the helicity dependence for the $\gamma p \rightarrow p \pi^+\pi^-$% WIDTH=95 HEIGHT=33  reaction 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, M. Blackston, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, A. Fix, S. Görtz, P. Grabmayr, S. Hasegawa, E. Heid, H. Holvoet, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, G. Reicherz, C. Rohlof, G. Rosner, M. Rost, T. Rostomyan, D. Ryckbosch, M. Schumacher, B. Seitz, G. Tamas, A. Thomas, R. van de Vyver, H. Weller, F. Zapadtka 
GDH and A2 collaborations
Eur. J. Phys. A 34, 11-21 (2007)
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Experimental study of the halo nucleus $^6Li(\gamma,\pi^+)^6He$% WIDTH=105 HEIGHT=33  reaction 
N. Harrington, D. Branford, K. Föhl, E. Roche, J.R.M. Annand, R. Beck, P. Grabmayr, T. Hehl, D. Hornidge, D. Lohmann, K. Livingston, J.C. McGeorge, I.J.D. MacGregor, I. Martin, K. Monstad, F. Moschini, A. Reiter, S. Waddell, D.P. Watts, S. Young
Phys. Rev. C 75, 044311 (2007)
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2006

Determination of $\pi^\pm$% WIDTH=25 HEIGHT=17  meson polarizabilities from the $\gamma\gamma\rightarrow \pi^+\pi^-$% WIDTH=88 HEIGHT=33  process 
L. Filkov, V. Kashevarov
Phys. Rev. C 73, 035210 (2006)
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Measurement of the helicity dependence for the $\gamma p\rightarrow n\pi^+$% WIDTH=76 HEIGHT=33  channel in the second resonance region 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, S. Görtz, P. Grabmayr, S. Hasegawa, E. Heid, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, S.S. Kamalov, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, G. Reicherz, C. Rohlof, G. Rosner, M. Rost, T. Rostomyan, D. Ryckbosch, M. Schumacher, B. Seitz, G. Tamas, A. Thomas, L. Tiator, R. van de Vyver, F. Zapadtka 
A2 and GDH Collaborations
Phys. Rev. C74, 045204 (2006)
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First measurement of the Gerasimov-Drell-Hearn integrand for $^2H$% WIDTH=26 HEIGHT=17  from 200 to 800 MeV 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, C. Bradtke, A. Braghieri, N. d'Hose, H. Dutz, S. Görtz, P. Grabmayr, S. Hasegawa, E. Heid, H. Holvoet, T. Iwata, O. Jahn, P. Jennewein, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, V. Lisin, M. Martinez, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, G. Reicherz, C. Rohlof, G. Rosner, M. Rost, T. Rostomyan, D. Ryckbosch, M. Schumacher, B. Seitz, G. Tamas, A. Thomas, R. van de Vyver, L. van Hoorebeke, F. Zapadtka
Phys. Rev. Lett. 97, 202303 (2006)
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A microscope for the Glasgow photon tagging spectrometer in Mainz 
A. Reiter, P. Lumsden, J. Ahrens, J.R.M. Annand, R. Beck, J.C. McGeorge, R.O. Owens
Eur. Phys. J. A 30, 461 (2006)
Remarks: DOI 10.1140/epja/i2006-10130-9
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Die Polarisierbarkeit des Pions 
T. Walcher
Physik Journal 5 (2006) 12, 45
Remarks: (in german)
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2005

Measurement of the $\pi^+$% WIDTH=24 HEIGHT=17  meson polarizabilities via the $\gamma p\rightarrow N\pi^+\gamma$% WIDTH=90 HEIGHT=33  reaction 
J. Ahrens, V. Alekseyev, J.R.M. Annand, H.-J. Arends, R. Beck, G. Caselotti, S. Cherepna, D. Drechsel, L. Filkov, K. Föhl, I. Giller, P. Grabmayr, T. Hehl, D. Hornidge, V. Kashevarov, M. Kotulla, D. Krambrich, B. Krusche, M. Lang, I.J.D. MacGregor, J.C. McGeorge, V. Metag, M. Moinester, R. Novotny, M. Pfeiffer, M. Rost, S. Schadmand, S. Scherer, A. Thomas, C. Unkmeir, T. Walcher
Eur. Phys. J. A 23, 113-127 (2005)
Remarks: DOI 10.1140/epja/i2004-10056-2
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Measurement of Helicity-Dependent Photoabsorption Cross Sections on the Neutron from 815 to 1825 MeV 
H. Dutz, K. Helbing, J. Krimmer, T. Speckner, G. Zeitler, J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, R. Beck, A. Bock, C. Bradtke, A. Braghieri, W. v. Drachenfels, F. Frommberger, M. Godo, S. Görtz, P. Grabmayr, S. Hasegawa, K. Hansen, J. Harmsen, E. Heid, W. Hillert, H. Holvoet, N. Horikawa, T. Iwata, L. van Hoorebeke, N. d'Hose, P. Jennewein, B. Kiel, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, R. Leukel, V. Lisin, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, G. Reicherz, C. Rohlof, T. Rostomyan, M. Sauer, B. Schoch, M. Schumacher, G. Tamas, A. Thomas, R. van de Vyver, W. Weihofen, F. Zapadtka
PRL 94, 162001 (2005)
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The selection and performance of diamond radiators used in coherent bremsstrahlung experiments 
J.D. Kellie, P. Clive, R. Beck, K. Livingston, I.J.D. MacGregor, J.C. McGeorge, A. Schmidt, D.P. Watts, . et al.
NIM A 545 (2005) 164-180
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Intermediate resonance excitation in the $\gamma p\rightarrow p\pi^0\pi^0$% WIDTH=88 HEIGHT=33  reaction 
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. Degrande, N. d'Hose, H. Dutz, S. Görtz, P. Grabmayr, K. Hansen, J. Harmsen, D. von Harrach, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, R. van de Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler 
GDH and A2 Collaborations
Physics Letters B 624 (2005) 173
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Polarizabiliy of the nucleon and Compton scattering 
M. Schumacher
Progr. Part. Nucl. Phys. 55 (2005) 567-646
Remarks: Review
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Measurement of the G asymmetry for the $\gamma p\rightarrow N \pi$% WIDTH=70 HEIGHT=29  channels in the $\Delta (1232)$% WIDTH=62 HEIGHT=31  resonance region 
J. Ahrens, S. Altieri, J.R.M. Annand, H.-J. Arends, R. Beck, A. Braghieri, N. d'Hose, H. Dutz, S. Görtz, S. Hasegawa, E. Heid, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, R. Kondratiev, M. Lang, B. Lannoy, K. Livingston, J.C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, G. Reicherz, G. Rosner, M. Rost, T. Rostomyan, D. Ryckbosch, M. Schumacher, B. Seitz, G. Tamas, A. Thomas, R. van de Vyver, T. Walcher, F. Zapadtka
Eur.Phys.J. A 26, 135-140 (2005)
Remarks: DOI 10.1140/epja/i2005-10158-3
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Determination of $\pi^0$% WIDTH=21 HEIGHT=17  meson quadrupole polarizabilities from the process $\gamma\gamma\rightarrow\pi^0\pi^0$% WIDTH=81 HEIGHT=33  
L. Filkov, V. Kashevarov
Phys. Rev. C 72, 035211 (2005)
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2004

Quasi-free $\pi^0$% WIDTH=21 HEIGHT=17  photoproduction from the bound nucleon 
K. Kossert, M. Camen, F. Wissmann, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, G. Caselotti, P. Grabmayr, O. Jahn, P. Jennewein, M.I. Levchuk, A.I. L'vov, J.C. McGeorge, F.A. Natter, V. Olmos de León, V.A. Petrun'kin, G. Rosner, M. Schumacher, B. Seitz, F. Smend, A. Thomas, W. Weihofen, F. Zapadtka
Eur. Phys. J. A 19 (2004) 391
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Double $\pi^0$% WIDTH=21 HEIGHT=17  Photoproduction off the Proton 
M. Kotulla, J. Ahrens, J.R.M. Annand, R. Beck, D. Hornidge, S. Janssen, B. Krusche, J.C. McGeorge, I.J.D. MacGregor, J. Messchendorp, V. Metag, R. Novotny, M. Pfeiffer, R.O. Owens, M. Rost, S. Schadmand, D.P. Watts
Phys. Lett. B 578 (2004) 63
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Experimental Check of the Gerasimov-Drell-Hearn Sum Rule for $^1$% WIDTH=11 HEIGHT=17
H. Dutz, K. Helbing, J. Krimmer, T. Speckner, G. Zeitler, J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, R. Beck, A. Bock, C. Bradtke, A. Braghieri, W. v. Drachenfels, F. Frommberger, M. Godo, S. Görtz, P. Grabmayr, S. Hasegawa, K. Hansen, J. Harmsen, E. Heid, W. Hillert, H. Holvoet, N. Horikawa, T. Iwata, L. van Hoorebeke, N. d'Hose, P. Jennewein, B. Kiel, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, R. Leukel, V. Lisin, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, G. Reicherz, C. Rohlof, T. Rostomyan, M. Sauer, B. Schoch, M. Schumacher, G. Tamas, A. Thomas, R. van de Vyver, W. Weihofen, F. Zapadtka 
GDH Collaboration
Phys. Rev. Lett. 93 (2004) 032003
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Helicity dependence of the $\vec{\gamma}\vec{p}\rightarrow N\pi$% WIDTH=70 HEIGHT=30  channels and multipole analysis in the $\Delta$% WIDTH=17 HEIGHT=15  region 
J. Ahrens et al.,
for the GDH and A2 Collaborations
Eur. Phys. J. A 21 (2004) 323
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Photoproduction of $\pi^0$% WIDTH=21 HEIGHT=17 -mesons from nuclei 
B. Krusche, J. Lehr, J. Ahrens, J.R.M. Annand, R. Beck, F. Bloch, L. Fog, D. Hornidge, S. Janssen, M. Kotulla, J.C. McGeorge, I.J.D. MacGregor, J. Messchendorp, V. Metag, U. Mosel, R. Novotny, R.O. Owens, M. Pfeiffer, R. Sanderson, S. Schadmand, D.P. Watts
Eur. Phys. J. A 22, 277-291 (2004)

Surface and volume effects in the photoabsorption of nuclei 
B. Krusche, J. Lehr, F. Bloch, M. Kotulla, V. Metag, U. Mosel, S. Schadmand
Eur. Phys. J. A 22, 347-351 (2004)
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Photoproduction of $\eta$% WIDTH=13 HEIGHT=28  mesic $^3He$% WIDTH=33 HEIGHT=17  
M. Pfeiffer, J. Ahrens, J.R.M. Annand, R. Beck, G. Caselotti, K. Föhl, L. Fog, D. Hornidge, S. Janssen, M. Kotulla, B. Krusche, J.C. McGeorge, I.J.D. MacGregor, K. Mengel, J. Messchendorp, V. Metag, R. Novotny, M. Rost, S. Sack, R. Sanderson, S. Schadmand, A. Thomas, D.P. Watts
Phys. Rev. Lett. 92 (2004) 252001
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2003

Helicity dependence of the $\vec{\gamma}\vec{p}\rightarrow n\pi^{+}\pi^0$% WIDTH=93 HEIGHT=33  reaction in the second resonance region 
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. Degrande, N. d'Hose, H. Dutz, S. Görtz, P. Grabmayr, K. Hansen, J. Harmsen, D. von Harrach, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, G. Rosner, T. Rostomyan, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, R. van de Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler 
GDH and A2 Collaborations
Phys. Lett. B 551 (2003) 49
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Exclusive measurement of quasi-free tex2html_wrap_inline7-photoproduction from deuterium 
J. Weiß, P. Achenbach, R. Beck, V. Hejny, V. Kleber, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, V. Olmos de León, R.O. Owens, F. Rambo, A. Schmidt, U. Siodlaczek, H. Ströher, F. Wissmann, M. Wolf
Eur. Phys. J. A 16 (2003) 275
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Quasi-free Compton scattering and the polarizabilities of the neutron 
K. Kossert, M. Camen, F. Wissmann, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, G. Caselotti, P. Grabmayr, O. Jahn, P. Jennewein, M.I. Levchuk, A.I. L'vov, J.C. McGeorge, F.A. Natter, V. Olmos de León, V.A. Petrun'kin, G. Rosner, M. Schumacher, B. Seitz, F. Smend, A. Thomas, W. Weihofen, F. Zapadtka
Eur. Phys. J. A 16 (2003) 259
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Three-nucleon mechanisms in photoreactions 
D.P. Watts, J. Ahrens, J.R.M. Annand, R. Beck, D. Branford, P. Grabmayr, T. Hehl, J.D. Kellie, I.J.D. MacGregor, J.C. McGeorge, R.O. Owens
Phys. Lett. B 553 (2003) 25
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First measurement of the helicity dependent $\vec{\gamma}\vec{p}\rightarrow p\eta$% WIDTH=62 HEIGHT=30  differential cross section 
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. d'Hose, D. Drechsel, H. Dutz, S. Görtz, P. Grabmayr, K. Hansen, J. Harmsen, D. von Harrach, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, G. Rosner, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, R. van de Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler
A2 and GDH-Collaborations
Eur. Phys. J. A 17 (2003) 241
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First Measurement of the GDH sum rule for $^1$% WIDTH=11 HEIGHT=17 H from 0.7 to 1.8 GeV at ELSA 
H. Dutz, K. Helbing, J. Krimmer, T. Speckner, G. Zeitler, J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, R. Beck, A. Bock, C. Bradtke, A. Braghieri, W. v. Drachenfels, F. Frommberger, M. Godo, S. Görtz, P. Grabmayr, S. Hasegawa, K. Hansen, J. Harmsen, E. Heid, W. Hillert, H. Holvoet, N. Horikawa, T. Iwata, L. van Hoorebeke, N. d'Hose, P. Jennewein, B. Kiel, F. Klein, R. Kondratiev, M. Lang, B. Lannoy, R. Leukel, V. Lisin, D. Menze, W. Meyer, T. Michel, J. Naumann, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, G. Reicherz, C. Rohlof, T. Rostomyan, M. Sauer, B. Schoch, M. Schumacher, G. Tamas, A. Thomas, R. van de Vyver, W. Weihofen, F. Zapadtka 
GDH-Collaboration
Phys. Rev. Lett. 91(2003)192001


2002

Coherent tex2html_wrap_inline7-photoproduction from atomic nuclei 
B. Krusche, J. Ahrens, R. Beck, S.S. Kamalov, V. Metag, R.O. Owens, H. Ströher
Phys. Lett. B526 (2002) 287
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Threshold enhancement in tex2html_wrap_inline7 photoproduction from tex2html_wrap_inline9 and tex2html_wrap_inline11 
V. Hejny, J. Weiß, J. Ahrens, J.R.M. Annand, R. Beck, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, I.J.D. MacGregor, V. Metag, R. Novotny, V. Olmos de León, F. Rambo, A. Schmidt, M. Schumacher, U. Siodlaczek, H. Ströher, F. Wissmann, M. Wolf
Eur. Phys. J. A 13 (2002) 493
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Backward spin polarizability $\gamma_{\pi}$% WIDTH=21 HEIGHT=28  of the proton 
M. Camen, K. Kossert, F. Wissmann, J. Ahrens, H.-J. Arends, R. Beck, G. Caselotti, P. Grabmayr, P.D. Harty, O. Jahn, P. Jennewein, R. Kondratiev, M.I. Levchuk, V. Lisin, A.I. L'vov, J.C. McGeorge, F.A. Natter, V. Olmos de León, M. Schumacher, B. Seitz, F. Smend, A. Thomas, W. Weihofen, F. Zapadtka
Phys. Rev. C 65 (2002) 032202
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The helicity amplitudes Atex2html_wrap_inline12 and Atex2html_wrap_inline14 for the Dtex2html_wrap_inline16 resonance obtained from the tex2html_wrap_inline18 reaction} 
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. Degrande, N. d'Hose, D. Drechsel, H. Dutz, S. Görtz, P. Grabmayr, K. Hansen, J. Harmsen, D. von Harrach, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, L. van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, S.S. Kamalov, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, G. Rosner, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, L. Tiator, R. van de Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler
Phys. Rev Lett. 88 (2002) 232002
Remarks: A2- and GDH-Collaborations

In-medium modifications of the tex2html_wrap_inline7 interaction in photon-induced reactions 
J. Messchendorp, S. Janssen, M. Kotulla, J. Ahrens, J.R.M. Annand, R. Beck, A. Bloch, G. Caselotti, L. Fog, D. Hornidge, B. Krusche, W. Langgärtner, J.C. McGeorge, I.J.D. MacGregor, K. Mengel, V. Metag, R. Novotny, R.O. Owens, M. Pfeiffer, S. Sack, R. Sanderson, S. Schadmand
PRL 89 (2002) 222302
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Neutron Polarizabilities investigated by quasi-free Compton scattering from the deuteron
K. Kossert, M. Camen, F. Wissmann, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, G. Caselotti, P. Grabmayr, O. Jahn, P. Jennewein, M.I. Levchuk, A.I. L'vov, J.C. McGeorge, F.A. Natter, V. Olmos de León, V.A. Petrun'kin, G. Rosner, M. Schumacher, B. Seitz, F. Smend, A. Thomas, W. Weihofen, F. Zapadtka
Phys. Rev. Lett. 88 (2002) 162301
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Investigation of tex2html_wrap_inline7 medium effects using the tex2html_wrap_inline9 tex2html_wrap_inline11 and tex2html_wrap_inline13 reactions 
D. Branford, J. Arneil, J.A. MacKenzie, K. Föhl, F.X. Lee, J. Ahrens, J.R.M. Annand, R. Beck, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, T. Lamparter, M. Liang, I.J.D. MacGregor, J.C. McGeorge, R.O. Owens, M. Sauer, R. Schneider, K. Späth, D.P. Watts
Phys. Rev. C 66 (2002) 015208
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The reaction tex2html_wrap_inline8 and the magnetic dipole moment of the ^+(1232) resonance 
M. Kotulla, J. Ahrens, J.R.M. Annand, R. Beck, G. Caselotti, L. Fog, D. Hornidge, S. Janssen, B. Krusche, J.C. McGeorge, I.J.D. MacGregor, K. Mengel, J. Messchendorp, V. Metag, R. Novotny, M. Pfeiffer, M. Rost, S. Sack, R. Sanderson, S. Schadmand, D.P. Watts
Phys. Rev. Lett. 89 (2002) 272001
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Scintillators for photon detection at medium energies: A comparative study of $BaF_2$% WIDTH=43 HEIGHT=29 $CeF_3$% WIDTH=41 HEIGHT=29  and $PbWO_4$% WIDTH=60 HEIGHT=29  
R. Novotny, R. Beck, W. Doering, V. Hejny, M. Hoek, A. Hofstaetter, V. Metag, K. Roemer
Nucl. Instrum. Meth. A 486 (2002) 131
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2001

Compton scattering by the proton 
G. Galler, V. Lisin, R. Kondratiev, A.M. Massone, S. Wolf, J. Ahrens, H.-J. Arends, R. Beck, M. Camen, G.P. Capitani, P. Grabmayr, S.J. Hall, T. Hehl, F. Härter, P. Jennewein, K. Kossert, A.I. L'vov, C. Molinari, P. Ottonello, J. Peise, I. Preobrajenski, S. Proff, A. Robbiano, M. Sanzone, M. Schumacher, M. Schmitz, F. Wissmann
Phys. Lett. B503 (2001) 245
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Low-energy Compton scattering and the polarizabilities of the proton 
V. Olmos de León, F. Wissmann, J. Ahrens, H.-J. Arends, R. Beck, P.D. Harty, V. Hejny, P. Jennewein, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, J.C. McGeorge, V. Metag, R. Novotny, A. Polonski, F. Rambo, A. Schmidt, M. Schumacher, U. Siodlaczek, H. Ströher, A. Thomas, J. Weiß, M. Wolf
EPJ A10 (2001) 207
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Helicity structure of the tex2html_wrap_inline7 N - interaction and the GDH sum rule 
H.-J. Arends 
for the A2- and GDH-Collaborations
Nucl. Phys. A684 (2001) 113c
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Half a century of Experimental Photo-Nuclear Physics 
J. Ahrens
Proc. Fund. Issues in Elem. Matter, Bad Honnef, Sep. 25-29, 2000, ed. W. Greiner, EP Systema, Debrecen, Hungary, p. 11 (2001)
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The GDH experiment at MAMI 
P. Pedroni 
for the GDH and A2 Collaborations
Proceedings GDH2000, Mainz 14-17 June 2000, World Sci., ed. D. Drechsel & L. Tiator, 2001, p. 99
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Helicity dependence of single-pion photoproduction in the Delta region 
I. Preobrajenski 
for the A2/GDH Collaboration
Proc. GDH2000, Mainz 14-17 June 2000, World Sci., ed. D. Drechsel & L. Tiator, 2001, p. 109
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Double pion photoproduction asymmetries in the GDH experiment at MAMI/Mainz 
H. Holvoet 
for the A2/GDH Collaboration
Proc. GDH2000, Mainz 14-17 June 2000, World Sci., ed. D. Drechsel & L. Tiator, 2001, p. 119
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Status of the GDH-experiment at MAMI
J. Ahrens 
for the GDH- and A2-Collaboration
Proc., DIS2000, Liverpool, World Sci.. ed. J.A. Gracey & T. Greenshaw, p.219 (2001)
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First results from the GDH experiment on the proton at MAMI
R. van de Vyver
XVII Europ. Conf. on Few Body Problems in Physics, Evora (Portugal), Sept. 2000, Nucl. Phys. A 689 (2001) 379c
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First Measurement of the Gerasimov-Drell-Hearn Integral for 1H from 200 to 800 MeV
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. d'Hose, N. Degrande, H. Dutz, P. Grabmayr, S. Görtz, K. Hansen, J. Harmsen, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, N. Horikawa, T. Iwata, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, R.O. Owens, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, D. Ryckbosch, F. Sadiq, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, M. Steigerwald, N. Takabayashi, G. Tamas, A. Thomas, R. van de Vyver, L. van Hoorebeke, D. von Harrach, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler
Phys. Rev. Lett. 87(2001)022003

Coherent and Incoherent tex2html_wrap_inline7 Photoproduction from the Deuteron 
U. Siodlaczek, J. Ahrens, J.R.M. Annand, H.-J. Arends, R. Beck, R. Bilger, H. Clement, V. Hejny, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, J.C. McGeorge, V. Metag, R. Novotny, V. Olmos de León, F. Rambo, M. Schepkin, A. Schmidt, I. Seluzhenkov, H. Ströher, G.J. Wagner, T. Walcher, J. Weiß, F. Wissmann, M. Wolf
Eur. Phys. J. A10(2001)365
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Polarized photon measurement of the tex2html_wrap_inline10C(tex2html_wrap_inline12,pp) and (tex2html_wrap_inline14,pn) reactions for Etex2html_wrap_inline16=160-350 MeV 
C.J.Y. Powrie, I.J.D. MacGregor, J. Ahrens, J.R.M. Annand, J. Arneil, R. Beck, D. Branford, S. Franczuk, D. Glazier, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, D.G. Ireland, J.D. Kellie, K. Livingston, J.C. McGeorge, F.A. Natter, S. Oberkirsch, R.O. Owens, J. Ryckebusch, M. Sauer, A. Settele, D.P. Watts
Phys. Rev. C 64 (2001) 034602
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Test of low-energy theorems for p($\vec{\gamma},\pi^0$% WIDTH=37 HEIGHT=33 )p in the threshold region 
A. Schmidt, J. Ahrens, H.-J. Arends, R. Beck, A.M. Bernstein, V. Hejny, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, I.J.D. MacGregor, J.C. McGeorge, V. Metag, V. Olmos de León, F. Rambo, U. Siodlaczek, H. Ströher, T. Walcher, J. Weiß, F. Wissmann, M. Wolf
Phys. Rev. Lett. 87 (2001) 232501-1

Direct observation of a tex2html_wrap_inline8 decay of the tex2html_wrap_inline10 baryon resonance 
W. Langgärtner, J. Ahrens, R. Beck, V. Hejny, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, I.J.D. MacGregor, J. Messchendorp, V. Metag, R. Novotny, V. Olmos de León, F. Rambo, S. Schadmand, A. Schmidt, U. Siodlaczek, H. Ströher, J. Weiß, F. Wissmann, M. Wolf
Phys.Rev.Lett. 87 (2001) 052001-1
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In-medium properties of the tex2html_wrap_inline8 nucleon resonance 
B. Krusche, J. Ahrens, R. Beck, I.J.D. MacGregor, J.C. McGeorge, V. Metag, H. Ströher
Phys.Rev.Lett. 86 (2001) 4764
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Exclusive measurement of coherent tex2html_wrap_inline7-photoproduction from the deuteron 
J. Weiß, J. Ahrens, J.R.M. Annand, R. Beck, V. Hejny, J.D. Kellie, V. Kleber, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, V. Olmos de León, F. Rambo, A. Schmidt, U. Siodlaczek, H. Ströher, F. Wissmann, M. Wolf
Eur. Phys. J. A 11, 371-374 (2001)
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Compton scattering by the proton using a large-acceptance arrangement 
S. Wolf, V. Lisin, R. Kondratiev, G. Galler, J. Ahrens, H.-J. Arends, R. Beck, M. Camen, G.P. Capitani, P. Grabmayr, S.J. Hall, F. Härter, T. Hehl, P. Jennewein, K. Kossert, A.I. L'vov, A.M. Massone, C. Molinari, P. Ottonello, J. Peise, I. Preobrajenski, S. Proff, A. Robbiano, M. Sanzone, M. Schumacher, M. Schmitz, F. Wissmann
Eur. Phys. J. A12 (2001) 231
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Status of nucleon resonances with masses $M < M_N+M_{\pi}$% WIDTH=113 HEIGHT=29  
R. Beck, S. Cherepna, L. Filkov, V. Kashevarov, M. Rost, T. Walcher
Proc. N*2001 Workshop Physics of excited Nucleons, Mainz, Germany, March 2001
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New results and future plans with real photons at MAMI
R. Beck, R. Leukel, A. Schmidt
Proc. MENU 2001 9th Int. Symp. Meson-Nucleon Physics and the structure of the nucleon, Washington DC, USA, July 2001
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Structure of the nucleon investigated by Compton scattering 
S. Wolf, V. Lisin, R. Kondratiev, A.M. Massone, G. Galler, J. Ahrens, H.-J. Arends, R. Beck, M. Camen, G.P. Capitani, P. Grabmayr, S.J. Hall, F. Härter, T. Hehl, P. Jennewein, K. Kossert, A.I. L'vov, C. Molinari, P. Ottonello, J. Peise, I. Preobrajenski, S. Proff, A. Robbiano, M. Sanzone, M. Schumacher, M. Schmitz, F. Wissmann
Nucl. Phys. A690 (2001) 310
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Results from Real Photon Experiments at MAMI, Mainz
J. Ahrens
Proc. Int. Workshop Physics with GeV Electrons and Gamma-Rays, Sendai, Japan, Feb.13-15,2001, Frontiers Science Series 36, ed. T. Tamae et al.
Remarks: for the A2-Collaboration
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In-medium properties of the $D_{13}(1520)$% WIDTH=75 HEIGHT=31  nucleon resonance 
R. Beck, B. Krusche, V. Metag, R.O. Owens, H. Ströher and others...
Phys. Rev. Lett. 86 (2001) 4764
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2000

Determination of the E2/M1 ratio in the tex2html_wrap_inline9 transition from a simultaneous measurement of tex2html_wrap_inline11 and tex2html_wrap_inline13 
R. Beck, H.-P. Krahn, J. Ahrens, J.R.M. Annand, H.-J. Arends, G. Audit, A. Braghieri, R.O. Owens, P. Pedroni, T. Pinelli, G. Tamas, L. Tiator, T. Walcher
Phys. Rev. C61(2000)035204
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Electromagnetic calorimetry with tex2html_wrap_inline7 in the energy regime below 1 GeV 
R. Novotny, R. Beck, W. Döring, V. Hejny, A. Hofstaetter, M.V. Korzhik, V. Metag, H. Ströher
IEEE Trans. Nucl. Sci. 47(2000)1499
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A compact solid state detector for small angle particle tracking
S. Altieri, O. Barnaba, A. Braghieri, M. Cambiaghi, A. Lanza, T. Locatelli, A. Panzeri, P. Pedroni, T. Pinelli, P. Jennewein, M. Lang, I. Preobrajenski, J.R.M. Annand, F. Sadiq
Nucl. Inst. Meth. A452(2000)185
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Why do higher resonance groups of nucleon disappear in the total photo-absorption on complex nuclei?
J. Ahrens 
for the A2-Collaboration
Proc. Hirschegg 2000, HDM XXVII, GSI, Jan 16-22, 2000
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Nuclear pion photoproduction in the Delta resonance region
D. Branford, J.A. MacKenzie, F.X. Lee, J. Ahrens, J.R.M. Annand, R. Beck, G.E. Cross, T. Davinson, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, D. Johnstone, J.D. Kellie, T. Lamparter, M. Liang, I.J.D. MacGregor, J.C. McGeorge, R.O. Owens, M. Sauer, R. Schneider, A.C. Shotter, K. Späth, D.P. Watts, P.J. Woods, L.E. Wright, T.T.-H. Yau
Phys. Rev. C61(2000)014603
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Double tex2html_wrap_inline7 photoproduction from the deuteron 
V. Kleber, J. Ahrens, R. Beck, V. Hejny, J.D. Kellie, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, R. Novotny, V. Olmos de León, R.O. Owens, F. Rambo, A. Schmidt, M. Schumacher, U. Siodlaczek, H. Ströher, J. Weiß, F. Wissmann, M. Wolf
Eur. Phys. J. A9(2000)1
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Photoproduction of neutral pion pairs from the proton
M. Wolf, J. Ahrens, R. Beck, V. Hejny, J.D. Kellie, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, J.C. Nacher, R. Novotny, V. Olmos de León, R.O. Owens, F. Rambo, A. Schmidt, M. Schumacher, U. Siodlaczek, H. Ströher, J. Weiß, F. Wissmann
Eur. Phys. J. A9(2000)5
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A photon calorimeter using lead tungstate crystals for the CEBAF hall A Compton polarimeter
D. Neyret, T. Pussieux, T. Auger, M. Baylac, E. Burtin, C. Cavata, R. Chipaux, S. Escoffier, N. Falletto, J. Jardillier, S. Kerhoas, D. Lhuillier, F. Marie, C. Veyssière, J. Ahrens, R. Beck, M. Lang
Nucl. Inst. Meth. A443(2000)231
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Compton scattering from the free and bound proton above pion threshold
F. Wissmann, P. Achenbach, J. Ahrens, H.-J. Arends, R. Beck, R. Bilger, M. Camen, G.P. Capitani, G. Caselotti, G. Galler, P. Grabmayr, T. Hehl, E. Heid, V. Hejny, F. Härter, O. Jahn, P. Jennewein, R. Kondratiev, K. Kossert, M. Kotulla, B. Krusche, V. Kuhr, A.I. L'vov, M. Lang, R. Leukel, M.I. Levchuk, V. Lisin, A.M. Massone, V. Metag, F.A. Natter, R. Novotny, V. Olmos de León, P. Ottonello, J. Peise, A. Polonski, I. Preobrajenski, S. Proff, F. Rambo, A. Robbiano, D. Rosenkranz, M. Sanzone, E. Schilling, A. Schmidt, M. Schumacher, B. Seitz, U. Siodlaczek, F. Smend, H. Ströher, H. Vorwerk, T. Walcher, J. Weiß, M. Wolf, S. Wolf, F. Zapadtka
Nucl. Phys. A663(2000)397
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Measurement of coherent and incoherent tex2html_wrap_inline7 photoproduction off the deuteron with tagged photons up to the tex2html_wrap_inline9 region 
U. Siodlaczek, J. Ahrens, H.-J. Arends, R. Beck, R. Bilger, H. Clement, V. Hejny, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, R. Novotny, V. Olmos de León, F. Rambo, A. Schmidt, M. Schumacher, M. Schepkin, H. Ströher, G.J. Wagner, T. Walcher, J. Weiß, F. Wissmann, M. Wolf
Nucl. Phys. A663(2000)428
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The tex2html_wrap_inline8 reaction studied over a wide kinematic range 
D.P. Watts, I.J.D. MacGregor, J. Ahrens, J.R.M. Annand, R. Beck, D. Branford, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, T. Lamparter, M. Liang, J.A. MacKenzie, S.J. McAllister, J.C. McGeorge, R.O. Owens, M. Sauer, R. Schneider, G.J. Wagner, T.T.-H. Yau
Phys. Rev. C62(2000)014616

Helicity dependence of tex2html_wrap_inline7 below 450 MeV and contribution for the Gerasimov-Drell-Hearn sum rule 
J. Ahrens, S. Altieri, J.R.M. Annand, G. Anton, H.-J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. d'Hose, N. Degrande, H. Dutz, P. Grabmayr, S. Görtz, K. Hansen, J. Harmsen, S. Hasegawa, T. Hasegawa, E. Heid, K. Helbing, H. Holvoet, N. Horikawa, T. Iwata, P. Jennewein, T. Kageya, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J.C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, R.O. Owens, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, C. Rohlof, D. Ryckbosch, F. Sadiq, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, M. Steigerwald, N. Takabayashi, G. Tamas, A. Thomas, R. van de Vyver, L. van Hoorebeke, D. von Harrach, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler
Phys. Rev. Lett. 84(2000)5950
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Helicity dependence of gamma tex2html_wrap_inline7: results from the GDH experiment at MAMI 
I. Preobrajenski 
for the GDH- and A2-Collaboration at MAMI
Czech. J. of Phys. 50(2000)315

Pion photoproduction results from MAMI
R. Leukel, R. Beck
Proc. NSTAR 2000, Conf. Excited Nucleons and Hadronic Structure, Newport News VA, USA, Feb. 2000, p. 14
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The GDH-Experiment at MAMI
A. Thomas 
for the GDH-Collaboration
Nucl. Phys. A663&664 (2000) 393c
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The GDH Experiment at MAMI
A. Thomas 
for the A2- and GDH-collaborations
Nucl. Phys. B79(1999)591 (Proc. Suppl.)
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Photon asymmetry of deuteron photodisintegration between 160 and 410 MeV
S. Wartenberg, J. Ahrens, J.R.M. Annand, H.-J. Arends, G. Audit, R. Beck, A. Braghieri, N. d'Hose, S.J. Hall, E. Heid, V. Isbert, J.D. Kellie, H.-P. Krahn, J.C. McGeorge, R.O. Owens, A. Panzeri, P. Pedroni, T. Pinelli, G. Tamas, A. Thomas
Few-Body Syst. 26(1999)213
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Single and double tex2html_wrap_inline7-production from the deuteron 
B. Krusche, J. Ahrens, R. Beck, M. Fuchs, S.J. Hall, F. Härter, J.D. Kellie, V. Metag, M. Röbig-Landau, H. Ströher
Eur. Phys. J. A6(1999)309
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Near threshold photoproduction of tex2html_wrap_inline7 mesons from tex2html_wrap_inline9He 
V. Hejny, J. Ahrens, R. Beck, S.J. Hall, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, R. Novotny, V. Olmos de León, R.O. Owens, F. Rambo, A. Schmidt, M. Schumacher, U. Siodlaczek, H. Ströher, F. Wissmann, J. Weiß, M. Wolf
Eur. Phys. J. A6(1999)83
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Coherent tex2html_wrap_inline7 photoproduction from tex2html_wrap_inline9He 
F. Rambo, J. Ahrens, H.-J. Arends, R. Beck, S.J. Hall, V. Hejny, P. Jennewein, S.S. Kamalov, M. Kotulla, B. Krusche, V. Kuhr, R. Leukel, V. Metag, R. Novotny, V. Olmos de León, A. Schmidt, M. Schumacher, U. Siodlaczek, F. Smend, H. Ströher, J. Weiß, F. Wissmann, M. Wolf
Nucl. Phys. A660(1999)69
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Invariant mass distributions of the tex2html_wrap_inline7 reaction 
A. Zabrodin, G. Audit, R. Beck, A. Braghieri, N. d'Hose, S.J. Hall, J.D. Kellie, M. MacCormick, L.Y. Murphy, A. Panzeri, P. Pedroni, T. Pinelli, G. Tamas
Phys. Rev. C60(1999)055201
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The (tex2html_wrap_inline8,pd) reaction in tex2html_wrap_inline10
S.J. McAllister, J.C. McGeorge, I.J.D. MacGregor, J.R.M. Annand, S.J. Hall, P.D. Harty, J.D. Kellie, G.J. Miller, R.O. Owens, D.P. Watts, T.T.-H. Yau, D. Branford, J.A. MacKenzie, M. Liang, P. Grabmayr, T. Hehl, T. Lamparter, M. Sauer, R. Schneider, J. Ahrens, R. Beck
Phys. Rev. C60(1990)044610
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A new frozen-spin target for 4tex2html_wrap_inline7 detection 
C. Bradtke, H. Dutz, H. Peschel, S. Görtz, J. Harmsen, S. Hasegawa, N. Horikawa, T. Iwata, T. Kageya, T. Matsuda, A. Meier, W. Meyer, E. Radtke, G. Reicherz, C. Rohlof, A. Thomas, A. Wakai
Nucl. Inst. Meth. A436(1999)430
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Compton scattering from the free and bound proton at backward angles above pion-threshold
F. Wissmann, V. Kuhr, O. Jahn, H. Vorwerk, P. Achenbach, J. Ahrens, H.-J. Arends, R. Beck, M. Camen, G. Caselotti, E. Heid, V. Hejny, P. Jennewein, R. Kondratiev, K. Kossert, M. Kotulla, B. Krusche, M. Lang, R. Leukel, M.I. Levchuk, V. Lisin, V. Metag, R. Novotny, V. Olmos de León, A. Polonski, I. Preobrajenski, F. Rambo, D. Rosenkranz, E. Schilling, A. Schmidt, M. Schumacher, B. Seitz, U. Siodlaczek, H. Ströher, A. Thomas, T. Walcher, J. Weiß, M. Wolf, F. Zapadtka
Nucl. Phys. A660(1999)232
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tex2html_wrap_inline9C(tex2html_wrap_inline11,pn) photon asymmetry for photonenergies = 180-340 MeV 
S. Franczuk, I.J.D. MacGregor, J. Ahrens, J.R.M. Annand, J. Arneil, R. Beck, D. Branford, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, D.G. Ireland, J.D. Kellie, K. Livingston, J.C. McGeorge, F.A. Natter, S. Oberkirsch, R.O. Owens, C.J.Y. Powrie, D. Ryckbosch, M. Sauer, A. Settele, D.P. Watts
Phys. Lett. B450(1999)332
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Mechanism in the tex2html_wrap_inline8C(tex2html_wrap_inline10,pn) and (tex2html_wrap_inline12,pp) Reactions 
I.J.D. MacGregor, T.T.-H. Yau, J. Ahrens, J.R.M. Annand, R. Beck, D. Branford, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, T. Lamparter, M. Liang, J.A. MacKenzie, S.J. McAllister, J.C. McGeorge, R.O. Owens, D. Ryckbosch, M. Sauer, R. Schneider, D.P. Watts
Phys. Rev. Lett. 80(1998)245
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A high resolution, large acceptance scintillation time of flight spectrometer
P. Grabmayr, T. Hehl, A. Stahl, J.R.M. Annand, R.O. Owens
Nucl. Instr. Meth. A402(1998)85
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Response of a PbWO_4-scintillator array to electrons in theenergy regime below 1 GeV
R. Novotny, W. Döring, K. Mengel, V. Metag, P. Cienne
Nucl. Phys. B 61B(1998)613 (Proc. Suppl.)
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Investigation of multiparticle final states in tex2html_wrap_inline8C photoreactions 
P.D. Harty, I.J.D. MacGregor, J. Ahrens, J.R.M. Annand, I. Anthony, R. Beck, D. Branford, G.E. Cross, T. Davinson, P. Grabmayr, S.J. Hall, T. Hehl, J.D. Kellie, T. Lamparter, J.A. MacKenzie, J.C. McGeorge, G.J. Miller, R.O. Owens, M. Sauer, R. Schneider, K. Späth
Phys. Rev. C57(1998)123
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On approaches to measure the electromagnetic polarizabilities of the neutron
F. Wissmann, M.I. Levchuk, M. Schumacher
Eur. Phys. J. A1(1998)193
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The angular distribution of the tex2html_wrap_inline8C(tex2html_wrap_inline10,pn) reaction for Etex2html_wrap_inline12=120-150 MeV 
T.T.-H. Yau, I.J.D. MacGregor, J. Ahrens, J.R.M. Annand, R. Beck, D. Branford, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, D.G. Ireland, J.D. Kellie, T. Lamparter, M. Liang, K. Livingston, J.A. MacKenzie, S.J. McAllister, J.C. McGeorge, R.O. Owens, M. Sauer, R. Schneider, D.P. Watts
EPJ A1(1998)241
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Enhancement of the linear polarization of coherent bremsstrahlung by collimation of the photon beam
F. Rambo, J. Ahrens, R. Beck, G. Galler, J.D. Kellie, H.-P. Krahn, A. Kraus, U. Ludwig, J. Peise, A. Schmidt, M. Schumacher, F. Smend, F. Wissmann, S. Wolf
Phys. Rev. C58(1998)489
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Angular and polarization dependence of Compton scattering on tex2html_wrap_inline7He in the Delta-resonance region 
A. Kraus, O. Selke, F. Wissmann, J. Ahrens, H.-J. Arends, R. Beck, G. Galler, M.-T. Hütt, B. Körfgen, J. Peise, M. Schumacher, F. Smend, R. Wichmann
Phys. Lett. B432(1998)45
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Detection of monochromatic photons between 50 and 790 MeV with a PbWOtex2html_wrap_inline7-scintillator array 
K. Mengel, R. Novotny, W. Döring, V. Metag, R. Beck, H. Ströher
IEEE Trans. Nucl. Sc. Symp. 45(1998)681
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A compact tex2html_wrap_inline7He cryotarget 
S. Oberkirsch, P. Grabmayr, T. Hehl, V. Olmos de León
Nucl. Instr. Meth. A418(1998)507
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Determination of the E2/M1 ratio in the tex2html_wrap_inline7 N tex2html_wrap_inline9(1232) transition 
R. Beck
Proc. Baryons'98, 8th Int. Conf. Structure of Baryons, Bonn, Germany, Sept. 1998, p. 783
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Measurements of the photon asymmetry for the production of neutral pions on the proton in the threshold region
A. Schmidt 
for the A2- and TAPS-Collaborations
Proc. Baryons'98, Int. Conf. Structure of Baryons, Bonn, Germany, Sept. 1998, p. 179
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Study of three-nucleon mechanisms in the photodisintegration of 3He
G. Audit, A. Braghieri, N. d'Hose, V. Isbert, S. Kerhoas, J.M. Laget, M. MacCormick, L.Y. Murphy, A. Panzeri, P. Pedroni, T. Pinelli, G. Tamas, J. Ahrens, J.R.M. Annand, R. Crawford, P. Grabmayr, S.J. Hall, J.D. Kellie
Nucl. Phys. A614(1997)461
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Two Neutral Pion Photoproduction off the Proton Between Threshold and 800 MeV
F. Härter, J. Ahrens, R. Beck, B. Krusche, V. Metag, M. Schmitz, H. Ströher, T. Walcher, M. Wolf
Phys. Lett. B401(1997)229
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Dispersion Theory of the proton Compton scattering in the first and second resonance regions
A.I. L'vov, V.A. Petrun'kin, M. Schumacher
Phys. Rev. C55(1997)359
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Observation of a unitary cusp in the threshold gamma p -> pi0 p reaction
A.M. Bernstein, E. Shuster, R. Beck, M. Fuchs, B. Krusche, H. Merkel, H. Ströher
Phys. Rev. C55(1997)1509
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Total Photoabsorption Cross Section for 4He from 200 to 800 MeV
M. MacCormick, J. Habermann, J. Ahrens, G. Audit, R. Beck, A. Braghieri, G. Galler, N. d'Hose, V. Isbert, P. Pedroni, T. Pinelli, G. Tamas, S. Wartenberg, A. Zabrodin
Phys. Rev. C55(1997)1033
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Total cross section measurement of the gamma n -> p pi- pi0 reaction
A. Zabrodin, G. Audit, R. Beck, A. Braghieri, N. d'Hose, B. Dolbilkin, S.J. Hall, V. Isbert, L.Y. Murphy, P. Pedroni, T. Pinelli, G. Tamas, S. Wartenberg
Phys. Rev. C55(1997)R1617
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E2/M1 ratio from the Mainz p(gamma[pol],p) pi0 data
R. Beck, H.-P. Krahn
Phys. Rev. Lett. 97(1997)4511 -- reply to a comment
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Mainz measurement of the E2/M1 ratio in the N -> Delta transition
R. Beck, H.-P. Krahn
Phys. Rev. Lett. 97(1997)4509 -- reply to a comment
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Measurement of the E2/M1 ratio in the N -> Delta transition using the reaction p(gamma[pol], p)pi0
R. Beck, H.-P. Krahn, J. Ahrens, H.-J. Arends, G. Audit, A. Braghieri, N. d'Hose, S.J. Hall, V. Isbert, I.J.D. MacGregor, P. Pedroni, T. Pinelli, G. Tamas, T. Walcher, S. Wartenberg
Phys. Rev. Lett. 78(1997)606
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The treatment of data from a neutral meson spectrometer
G.J. Miller, R.O. Owens
Nucl. Instr. Meth. A390(1997)257
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Beam asymmetry of coherent pi0 photoproduction on 4He in the Delta(1232) range measured using coherent bremsstrahlung
A. Kraus, O. Selke, F. Rambo, G. Galler, M. Schumacher, F. Smend, R. Wichmann, F. Wissmann, S. Wolf, J. Ahrens, H.-J. Arends, R. Beck, J. Peise
Phys. Rev. Lett. 79(1997)3834
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12C(gamma,pi+ n) and 12C(gamma, pi+ p) reactions across the Delta resonance region
M. Liang, D. Branford, T. Davinson, D. Johnstone, J.A. MacKenzie, A.C. Shotter, J.R.M. Annand, S.J. Hall, P.D. Harty, J.D. Kellie, I.J.D. MacGregor, J.C. McGeorge, G.J. Miller, R.O. Owens, T.T.-H. Yau, P. Grabmayr, T. Hehl, J. Leypoldt, T. Lamparter, A. Mondry, M. Sauer, R. Schneider, K. Späth, J. Ahrens, R. Beck
Phys. Lett. B411(1997)244
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Break-up and Coherent Photoproduction of eta Mesons on the Deuteron
P. Hoffmann-Rothe, M. Krebeck, J. Hey, M. Breuer, G. v. Edel, E. Hourany, M. Rigney, J. Ajaka, G. Anton, H.-J. Arends, G. Berrier-Ronsin, W. Beulertz, G. Blanpied, A. Bock, J.-P. Didelez, K. Helbing, R. Maass, G. Nöldeke, B. Preedom, B. Richie, L. Rosier, B. Saghai, M. Schumacher, F. Smend
Phys. Rev. Lett. 78(1997)4697-4700
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Compton Scattering by the Proton Through Theta_cms=75 Grad and 90 Grad in the Delta-Resonance Region
A. Hünger, J. Peise, A. Robbiano, J. Ahrens, I. Anthony, H.-J. Arends, R. Beck, G.P. Capitani, B. Dolbilkin, H. Falkenberg, G. Galler, S.J. Hall, J.D. Kellie, R. Kondratiev, R. Kordsmeier, V. Lisin, A.I. L'vov, G.J. Miller, C. Molinari, P. Ottonello, A. Reolon, M. Sanzone, M. Schmitz, M. Schneider, M. Schumacher, O. Selke, T. Walcher, F. Wissmann, S. Wolf, A. Zucchiatti
Nucl. Phys. A620(1997)385
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Constraining N*(1535) parameters from the eta photoproduction
B. Krusche, N. Mukhopadhyay, J.-F. Zhang, M. Benmerrouche
Phys. Lett. B397(1997)171
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Photoproduction of positive pions from polarized protons
H. Dutz, D. Krämer, B. Zucht, K.H. Althoff, G. Anton, H.-J. Arends, W. Beulertz, A. Bock, M. Breuer, R. Gehring, M. Gemander, S. Görtz, K. Helbing, J. Hey, W. Meyer, G. Nöldeke, R. Paulsen, G. Reicherz, A. Thomas, S. Wartenberg
Nucl. Phys. A601(1996)319-332
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PIP - a large solid angle scintillator telescope for detecting protons and pions
I.J.D. MacGregor, J.R.M. Annand, D. Branford, G.E. Cross, P. Grabmayr, P.D. Harty, T. Hehl, T. Lamparter, J.A. MacKenzie, S.J. McAllister, J.C. McGeorge, R.O. Owens, R. Schneider, P. Terzoudi, D.P. Watts, T.T.-H. Yau
Nucl. Inst. Meth. A382(1996)479
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Identification of 2N photon absorption in 12C(gamma,2N) reactions 150 to 400 MeV
P.D. Harty, I.J.D. MacGregor, P. Grabmayr, J. Ahrens, J.R.M. Annand, I. Anthony, R. Beck, D. Branford, G.E. Cross, T. Davinson, S.J. Hall, T. Hehl, J.D. Kellie, T. Lamparter, J.A. MacKenzie, J.C. McGeorge, G.J. Miller, R.O. Owens, M. Sauer, R. Schneider, K. Späth
Phys. Lett. B380(1996)247
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Excitation functions for the two-nucleon photoabsorption in 6Li
P. Grabmayr, J. Ahrens, J.R.M. Annand, I. Anthony, D. Branford, G.E. Cross, T. Davinson, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, T. Lamparter, I.J.D. MacGregor, J.A. MacKenzie, J.C. McGeorge, G.J. Miller, R.O. Owens, M. Sauer, R. Schneider, K. Späth, G.J. Wagner
Phys. Lett. B370(1996)17
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The ring shaped plastic scintillator detector STAR for forward angle reconstruction
M. Sauer, A. Fuchs, P. Grabmayr, J. Leypoldt
Nucl. Instr. Meth. A378(1996)143
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A focal plane system for the 855 MeV tagged photon spectrometer at MAMI-B
S.J. Hall, G.J. Miller, R. Beck, P. Jennewein
Nucl. Instr. Meth. A368(1996)698
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Compton scattering from 4He in the Delta(1232) resonance region
O. Selke, A. Hünger, A. Kraus, M. Schumacher, R. Wichmann, J. Ahrens, H.-J. Arends, R. Beck, J. Peise, M. Schneider, F. Wissmann
Phys. Lett. B369(1996)207
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A high angular-resolution and time-of-flight detector system for recoil protons from reactions p(gamma,gamma)p and p(gamma,pi0)p
A. Hünger, R. Kordsmeier, M. Schumacher, O. Selke, J. Ahrens, J. Peise, M. Schmitz, M. Schneider, F. Wissmann, B. Dolbilkin, R. Kondratiev, V. Lisin, A. Polonski
Nucl. Instr. Meth. A372(1996)135
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Scattering of photons by the proton through theta_cm=90° in the Delta-resonance region
C. Molinari, P. Ottonello, A. Robbiano, M. Sanzone, A. Zucchiatti, G.P. Capitani, A.R. Reolon, H. Falkenberg, A. Hünger, R. Kordsmeier, M. Schumacher, J. Ahrens, H.-J. Arends, R. Beck, J. Peise, F. Wissmann, B. Dolbilkin, R. Kondratiev, V. Lisin, I. Anthony, J.D. Kellie, S.J. Hall, G.J. Miller
Phys. Lett. B371(1996)181
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Near threshold photoproduction of eta-mesons from complex nuclei
M. Röbig-Landau, J. Ahrens, G. Anton, R. Averbeck, R. Beck, M. Fuchs, A.R. Gabler, P.D. Harty, V. Hejny, F. Härter, B. Krusche, I.J.D. MacGregor, J.C. McGeorge, V. Metag, R. Novotny, J. Peise, A. Schubert, R.S. Simon, H. Ströher
Phys. Lett. B373(1996)45
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Two-body photodisintegration of the deuteron from 100 to 800 MeV
R. Crawford, J. Ahrens, S. Altieri, J.R.M. Annand, I. Anthony, G. Audit, R. Beck, A. Braghieri, N. d'Hose, S.J. Hall, V. Isbert, J.D. Kellie, S. Kerhoas, M. MacCormick, J.C. McGeorge, R. Medaglia, G.J. Miller, L.Y. Murphy, R.O. Owens, P. Pedroni, T. Pinelli, G. Tamas, P.A. Wallace
Nucl. Phys. A603(1996)303
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Photoemission of protons from 4He in the Delta-resonance region
R. Wichmann, J. Ahrens, H.-J. Arends, R. Beck, G. Galler, A. Hünger, A. Kraus, I.J.D. MacGregor, J. Peise, B. Seitz, M. Schmitz, M. Schneider, O. Selke, M. Schumacher, F. Wissmann
Nucl. Phys. A355(1996)169
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Compton scattering by the proton through theta_cms=75° in the Delta-resonance region
J. Peise, A. Hünger, J. Ahrens, I. Anthony, H.-J. Arends, R. Beck, G.P. Capitani, B. Dolbilkin, H. Falkenberg, S.J. Hall, P. Jennewein, J.D. Kellie, R. Kondratiev, R. Kordsmeier, V. Lisin, A.I. L'vov, G.J. Miller, C. Molinari, A.R. Reolon, A. Robbiano, M. Sanzone, M. Schmitz, M. Schneider, M. Schumacher, O. Selke, T. Walcher, F. Wissmann
Phys. Lett. B384(1996)37
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Total photoabsorption cross sections for 1H 2H and 3He from 200 to 800 MeV
M. MacCormick, G. Audit, N. d'Hose, L. Ghedira, V. Isbert, S. Kerhoas, L.Y. Murphy, G. Tamas, P.A. Wallace, S. Altieri, A. Braghieri, P. Pedroni, T. Pinelli, J. Ahrens, R. Beck, J.R.M. Annand, R. Crawford, J.D. Kellie, I.J.D. MacGregor, B. Dolbilkin, A. Zabrodin
Phys. Rev. C53(1996)41
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Quasifree pi+ production studied using the 12C(gamma,pi+n)11B reaction in the Delta-resonance
J.A. MacKenzie, D. Branford, J. Ahrens, J.R.M. Annand, R. Beck, G.E. Cross, T. Davinson, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, D. Johnstone, J.D. Kellie, T. Lamparter, M. Liang, I.J.D. MacGregor, J.C. McGeorge, R.O. Owens, M. Sauer, R. Schneider, A.C. Shotter, K. Späth, P.J. Woods, T.T.-H. Yau
Phys Rev. C54(1996)R6
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On photonuclear reaction mechanisms at intermediate energies
T. Lamparter, J. Ahrens, J.R.M. Annand, I. Anthony, R. Beck, D. Branford, G.E. Cross, T. Davinson, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, I.J.D. MacGregor, J.A. MacKenzie, J.C. McGeorge, G.J. Miller, R.O. Owens, M. Sauer, R. Schneider, K. Späth, G.J. Wagner
Z. Phys. A355(1996)1
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Neutral pion photoproduction from the proton near threshold
M. Fuchs, J. Ahrens, G. Anton, R. Averbeck, R. Beck, A.M. Bernstein, A.R. Gabler, P.D. Harty, S. Hlávac, F. Härter, B. Krusche, I.J.D. MacGregor, V. Metag, R. Novotny, R.O. Owens, J. Peise, M. Röbig-Landau, A. Schubert, R.S. Simon, H. Ströher, V. Tries
Phys. Lett. B368(1996)20
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Near threshold photoproduction of eta-mesons off the proton
B. Krusche, J. Ahrens, G. Anton, R. Beck, M. Fuchs, A.R. Gabler, F. Härter, S.J. Hall, P.D. Harty, S. Hlávac, I.J.D. MacGregor, J.C. McGeorge, V. Metag, R.O. Owens, J. Peise, M. Röbig-Landau, A. Schubert, R.S. Simon, H. Ströher, V. Tries
Phys. Rev. Lett. 74(1996)3736
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A comment to Phys. Rev. Lett 74(1995)3736
B. Krusche et al.
Phys. Rev. Lett. 75(1995)3023
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Mass and Gamma_(3pi0)/Gamma_(gamma,gamma) decay branching ratio of the eta-meson from the p(gamma,eta)p reaction
B. Krusche, J. Ahrens, I. Anthony, G. Anton, R. Beck, M. Fuchs, A.R. Gabler, F. Härter, J.D. Kellie, V. Metag, G.J. Miller, R.O. Owens, J. Peise, M. Röbig-Landau, A. Schubert, R.S. Simon, H. Ströher, V. Tries
Z. Phys. A351(1995)237
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A gain monitoring system for scintillation detectors using ultra bright LEDs
T. Hehl, P. Grabmayr, M. Sauer, G.J. Wagner
Nucl. Instr. Meth. A354(1995)505
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12C(gamma,p)11B cross section from 80 to 157 MeV
P.D. Harty, J.C. McGeorge, I.J.D. MacGregor, R.O. Owens, J.R.M. Annand, I. Anthony, G.I. Crawford, S.N. Dancer, S.J. Hall, J.D. Kellie, G.J. Miller
Phys. Rev. C51(1995)1982
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(gamma,2N) reaction 12C
J.C. McGeorge, I.J.D. MacGregor, S.N. Dancer, J.R.M. Annand, I. Anthony, G.I. Crawford, S.J. Hall, P.D. Harty, J.D. Kellie, G.J. Miller, R.O. Owens, P.A. Wallace
Phys. Rev. C51(1995)1967
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Proton photoproduction from 12C
G.E. Cross, I.J.D. MacGregor, J.C. McGeorge, J. Ahrens, I. Anthony, J.R.M. Annand, R. Beck, D. Branford, T. Davinson, P. Grabmayr, S.J. Hall, P.D. Harty, T. Hehl, J.D. Kellie, T. Lamparter, L. Machenil, J.A. MacKenzie, G.J. Miller, R.O. Owens, J. Ryckebusch, M. Sauer, R. Schneider, K. Späth, M. Vanderhaeghen
Nucl. Phys. A593(1995)463
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Total cross section measurement for the three double pion production channels on the proton
A. Braghieri, L.Y. Murphy, J. Ahrens, G. Audit, N. d'Hose, S. Kerhoas, V. Isbert, J.M. Laget, M. MacCormick, P. Pedroni, G. Tamas, T. Pinelli, A. Zabrodin
Phys. Lett. B363(1995)46
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Near threshold photoproduction of eta-mesons from the deuteron
B. Krusche, J. Ahrens, J.R.M. Annand, G. Anton, R. Beck, M. Fuchs, A.R. Gabler, V. Hejny, F. Härter, J.D. Kellie, J.C. McGeorge, V. Metag, J. Peise, M. Röbig-Landau, A. Schubert, H. Ströher
Phys. Lett. B358(1995)40
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Photofission of 235U and 238U at intermediate energies: absolute cross sections and fragment mass distributions
T. Frommhold, F. Steiper, W. Henkel, U. Kneißl, J. Ahrens, R. Beck, J. Peise, M. Schmitz, I. Anthony, J.D. Kellie, S.J. Hall, G.J. Miller
Z. Phys. A350(1994)249
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Modulated laser source for monitoring the stability of detectors employing photomultipliers
P. Ottonello, M. Sanzone
Nucl. Instr. Meth. A530(1994)486
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Linearly polarized photons at MAMI (Mainz)
D. Lohmann, J. Peise, J. Ahrens, I. Anthony, H.-J. Arends, R. Beck, R. Crawford, A. Hünger, K.-H. Kaiser, J.D. Kellie, C. Klümper, H.-P. Krahn, A. Kraus, U. Ludwig, M. Schneider, O. Selke, M. Schmitz, M. Schumacher, F. Wissmann, S. Wolf
Nucl. Instr. Meth. A343(1994)494
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Elastic and inelastic photon scattering from 12C
F. Wissmann, J. Peise, M. Schmitz, M. Schneider, J. Ahrens, I. Anthony, R. Beck, B. Dolbilkin, S.J. Hall, F. Härter, S. Herdade, J. Herrmann, A. Hünger, P. Jennewein, J.D. Kellie, R. Kondratiev, K.-H. Krause, H.-P. Krahn, V. Lisin, G.J. Miller, A. Polonski, M. Schumacher, J. Sobolewski, T. Walcher, A. Zabrodin
Phys. Lett. B335(1994)119
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Two body photodisintegration of 3He between 200 and 800 MeV
V. Isbert, G. Audit, N. d'Hose, S. Kerhoas, M. MacCormick, L.Y. Murphy, G. Tamas, S. Altieri, A. Braghieri, P. Pedroni, T. Pinelli, J. Ahrens, R. Beck, J. Peise, J.R.M. Annand, I. Anthony, R. Crawford, S.J. Hall, J.D. Kellie, G.J. Miller, P.A. Wallace
Nucl. Phys. A578(1994)525
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A range telescope technique for particle discrimination and energy reconstruction
A. Braghieri, P. Pedroni, T. Pinelli, G. Audit, N. d'Hose, V. Isbert, S. Kerhoas, M. MacCormick, L.Y. Murphy, G. Tamas, R. Crawford
Nucl. Instr. Meth. A343(1994)623
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Response of TAPS to monochromatic photons with energies between 45 and 790 MeV
A.R. Gabler, W. Döring, M. Fuchs, B. Krusche, V. Metag, R. Novotny, M. Röbig-Landau, H. Ströher, V. Tries, C. Molenaar, H. Löhner, J. van Pol, A. Raschke, M. Sumbera, L. Venema, H. Wilschut, R. Averbeck, W. Nieber, A. Schubert, R.S. Simon, R. Beck, J. Peise, G.J. Miller, R.O. Owens, G. Anton
Nucl. Instr. Meth. A346(1994)168
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The Mainz Microtron MAMI: a facility portrait with a glimpse at first results
J. Ahrens, H. Backe, D. von Harrach, K.-H. Kaiser, F. Klein, R. Neuhausen, T. Walcher
Nucl. Phys. News 4(1994)1
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Scaling of the 4He(gamma, p)t reaction in the E_gamma = 80 - 160 MeV region
H. Schmieden, I.J.D. MacGregor, R.O. Owens, B. Schoch, J.R.M. Annand, R. Beck, S. Doran, S.J. Hall, J.D. Kellie, J.C. McGeorge, J. Vogt
Phys. Lett. B314(1993)284
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Photodisintegration of the deuteron by linearly polarized photons
K.-H. Krause, J. Sobolewski, J. Ahrens, J. Henneberg, B. Ziegler
Nucl. Phys. A549(1992)387
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Total photofission cross section for 238U as a substitute for the photon absorption cross section in the energy range of the first baryon resonances
T. Frommhold, F. Steiper, W. Henkel, U. Kneißl, J. Ahrens, R. Beck, J. Peise, M. Schmitz
Phys. Lett. B295(1992)28
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Delbrück scattering of 30 - 100 MeV photons by Pb through angles of15 - 30 Grad
A. Baumann, P. Rullhusen, K. Rose, M. Schumacher, A. Milstein, J. Henneberg, N. Wieloch-Laufenberg, B. Ziegler
Nucl. Phys. A536(1992)97
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Nuclear photon scattering by Si
K. Schelhaas, J. Henneberg, N. Wieloch-Laufenberg, U. Zurmühl, B. Ziegler, M. Schumacher, F. Wolf
Nucl. Phys. A528(1991)189
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Design of a tagged photon spectrometer for use with the Mainz 840 MeVmicrotron
I. Anthony, J.D. Kellie, S.J. Hall, G.J. Miller, J. Ahrens
Nucl. Instr. Meth. A301(1991)230
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A tagging system for linearly polarized photons
K.-H. Krause, J. Sobolewski, D. Hauff, J. Henneberg, N. Wieloch-Laufenberg, J. Ahrens, H. Gimm, A. Zieger, B. Ziegler, P. Rullhusen
Nucl. Instr. Meth. A310(1991)577
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DAPHNE: a large-acceptance tracking detector for the study of photoreactions at intermediate energies
G. Audit, A. Bloch, N. d'Hose, V. Isbert, J. Martin, R. Powers, D. Sundermann, G. Tamas, P.A. Wallace, S. Altieri, A. Braghieri, F. Fossati, P. Pedroni, T. Pinelli, J. Bechade, P. Carton, S. Conat, D. Foucaud, M. Goldsticker
Nucl. Instr. Meth. A301(1991)473
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The BaF_2 photon spectrometer TAPS
R. Novotny
IEEE Trans. Nucl. Sci 38(1991)379

A high-resolution study of 12C(gamma,p) reaction with 49 -78.5 MeV tagged photons
S. Springham, D. Branford, T. Davinson, A. Schotter, J. Yorkston, J.C. McGeorge, J.D. Kellie, S.J. Hall, R. Beck, P. Jennewein, B. Schoch
Nucl. Phys. A517(1990)93
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Measurement of the p(gamma, pi0) cross section at threshold
R. Beck, F. Kalleicher, B. Schoch, J. Vogt, G. Koch, H. Ströher, V. Metag, J.C. McGeorge, J.D. Kellie, S.J. Hall
Phys. Rev. Lett. 65(1990)1841
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Polarizability of the neutron
K. Rose, B. Kasten, P. Rullhusen, M. Ludwig, A. Baumann, M. Schumacher, J. Ahrens, A. Zieger, D. Christmann, B. Ziegler, B. Schoch
Phys. Lett. B234(1990)460
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Nuclear photon scattering by 12C
K. Schelhaas, J. Henneberg, N. Wieloch-Laufenberg, U. Zurmühl, B. Ziegler, M. Schumacher, F. Wolf
Nucl. Phys. A506(1990)307
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Quasi-free Compton scattering by the neutron
K. Rose, B. Kasten, P. Rullhusen, M. Ludwig, A. Baumann, M. Schumacher, J. Ahrens, A. Zieger, D. Christmann, B. Schoch, B. Ziegler
Nucl. Phys. A514(1990)621
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Cross section and angular distribution for 12C(gamma, pi0)
G. Koch, H. Ströher, G. Breitbach, V. Metag, S. Tschesche, R. Beck, F. Kalleicher, B. Schoch, J. Vogt
Phys. Lett. B218(1989)143
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Differential cross section for coherent and incoherent neutral-pion photoproduction from Calcium
G. Koch, H. Ströher, G. Breitbach, V. Metag, S. Tschesche, R. Beck, F. Kalleicher, B. Schoch, J. Vogt
Phys. Rev. Lett. 63(1989)498
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Investigation of the 12C(gamma, pn) reaction using tagged photons
S.N. Dancer, I.J.D. MacGregor, J.R.M. Annand, G.I. Crawford, S.J. Hall, J.D. Kellie, J.C. McGeorge, R.O. Owens, P.A. Wallace, D. Branford, S. Springham, A. Schotter, B. Schoch, J. Vogt, R. Beck, G. Liesenfeld
Phys. Rev. Lett 61(1988)1170
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A spectrometer for near threshold photoproduction of neutral pions
H. Ströher, G. Koch, V. Metag, R. Beck, B. Schoch, J. Vogt
Nucl. Instr. Meth. A269(1988)568
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A 4pi double obelisk of position sensitive PPACs for new vistas in photofission experiments
W. Wilke, H. Brückel, R. Heil, U. Kneißl, H. Ströher, T. Weber
Nucl. Instr. Meth. A272(1988)785
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Detetection of hard photons with BaF_2 scintillators
R. Novotny, R. Riess, R. Hingmann, H. Ströher, R.D. Fischer, G. Koch, W. Kühn, V. Metag, R. Mühlhans, R. Beck, B. Schoch
Nucl. Instr. Meth. A262(1987)340
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The 12C(gamma, p)-reaction at E_gamma=60 and 80 MeV
J.C. McGeorge, G.I. Crawford, R.O. Owens, M.R. Sene, D. Branford, A. Schotter, B. Schoch, R. Beck, P. Jennewein, F. Klein, J. Vogt, F. Zettl
Phys. Lett. B179(1986)570
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