Measurement of unpolarized and polarized cross sections for deeply virtual Compton scattering on the proton at Jefferson Laboratory with CLAS

Hirlinger Saylor, N. (Rensselaer Polytechnic Institute, Troy, New York 12180, USA) (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Guegan, B. (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) (Rensselaer Polytechnic Institute, Troy, New York 12180, USA) ; Burkert, V.D. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Elouadrhiri, L. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Garçon, M. (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Girod, F.X. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Guidal, M. (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Jo, H.S. (Kyungpook National University, Daegu 41566, Republic of Korea) (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Kubarovsky, V. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Niccolai, S. (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Stoler, P. (Rensselaer Polytechnic Institute, Troy, New York 12180, USA) ; Adhikari, K.P. (Mississippi State University, Mississippi State, Mississippi 39762-5167, USA) (Old Dominion University, Norfolk, Virginia 23529, USA) ; Adhikari, S. (Florida International University, Miami, Florida 33199, USA) ; Akbar, Z. (Florida State University, Tallahassee, Florida 32306, USA) ; Amaryan, M.J. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Pereira, S. Anefalos (INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy) ; Ball, J. (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Balossino, I. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) ; Baltzell, N.A. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (University of South Carolina, Columbia, South Carolina 29208, USA) ; Barion, L. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) ; Battaglieri, M. (INFN, Sezione di Genova, 16146 Genova, Italy) ; Batourine, V. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Bedlinskiy, I. (Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia) ; Biselli, A.S. (Fairfield University, Fairfield, Connecticut 06824, USA) ; Boiarinov, S. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Briscoe, W.J. (The George Washington University, Washington, D.C. 20052, USA) ; Brooks, W.K. (Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile) ; Bültmann, S. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Cao, F. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Carman, D.S. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Celentano, A. (INFN, Sezione di Genova, 16146 Genova, Italy) ; Charles, G. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Chetry, T. (Ohio University, Athens, Ohio 45701, USA) ; Ciullo, G. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) (Università di Ferrara, 44121 Ferrara, Italy) ; Clary, Brandon A. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Cole, P.L. (Idaho State University, Pocatello, Idaho 83209, USA) ; Contalbrigo, M. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) ; Cortes, O. (Idaho State University, Pocatello, Idaho 83209, USA) ; D'Angelo, A. (INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy) (Università di Roma Tor Vergata, 00133 Rome, Italy) ; Dashyan, N. (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; De Vita, R. (INFN, Sezione di Genova, 16146 Genova, Italy) ; Defurne, M. (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Deur, A. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Diehl, S. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Djalali, C. (University of South Carolina, Columbia, South Carolina 29208, USA) ; Dupre, R. (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Egiyan, H. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Alaoui, A. El (Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile) (Argonne National Laboratory, Argonne, Illinois 60439, USA) ; Fassi, L. El (Mississippi State University, Mississippi State, Mississippi 39762-5167, USA) (Argonne National Laboratory, Argonne, Illinois 60439, USA) ; Eugenio, P. (Florida State University, Tallahassee, Florida 32306, USA) ; Fedotov, G. (Ohio University, Athens, Ohio 45701, USA) (University of South Carolina, Columbia, South Carolina 29208, USA) (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia) ; Fersch, R. (Christopher Newport University, Newport News, Virginia 23606, USA) (College of William and Mary, Williamsburg, Virginia 23187-8795, USA) ; Filippi, A. (INFN, Sezione di Torino, 10125 Torino, Italy) ; Forest, T.A. (Idaho State University, Pocatello, Idaho 83209, USA) ; Fradi, A. (Imam Abdulrahman Bin Faisal University, Industrial Jubail 31961, Saudi Arabia) (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Gavalian, G. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (Old Dominion University, Norfolk, Virginia 23529, USA) ; Gevorgyan, N. (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; Ghandilyan, Y. (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; Gilfoyle, G.P. (University of Richmond, Richmond, Virginia 23173, USA) ; Giovanetti, K.L. (James Madison University, Harrisonburg, Virginia 22807, USA) ; Gleason, C. (University of South Carolina, Columbia, South Carolina 29208, USA) ; Gohn, W. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Golovatch, E. (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia) ; Gothe, R.W. (University of South Carolina, Columbia, South Carolina 29208, USA) ; Griffioen, K.A. (College of William and Mary, Williamsburg, Virginia 23187-8795, USA) ; Guo, L. (Florida International University, Miami, Florida 33199, USA) (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Hafidi, K. (Argonne National Laboratory, Argonne, Illinois 60439, USA) ; Hakobyan, H. (Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile) (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; Hanretty, C. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (Florida State University, Tallahassee, Florida 32306, USA) ; Harrison, N. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Hattawy, M. (Argonne National Laboratory, Argonne, Illinois 60439, USA) ; Heddle, D. (Christopher Newport University, Newport News, Virginia 23606, USA) (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Hicks, K. (Ohio University, Athens, Ohio 45701, USA) ; Holtrop, M. (University of New Hampshire, Durham, New Hampshire 03824-3568, USA) ; Ilieva, Y. (University of South Carolina, Columbia, South Carolina 29208, USA) ; Ireland, D.G. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Ishkhanov, B.S. (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia) ; Isupov, E.L. (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia) ; Jenkins, D. (Virginia Tech, Blacksburg, Virginia 24061-0435, USA) ; Johnston, S. (Argonne National Laboratory, Argonne, Illinois 60439, USA) ; Joo, K. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Joosten, S. (Temple University, Philadelphia, PA 19122) ; Kabir, M.L. (Mississippi State University, Mississippi State, Mississippi 39762-5167, USA) ; Keller, D. (University of Virginia, Charlottesville, Virginia 22901, USA) (Ohio University, Athens, Ohio 45701, USA) ; Khachatryan, G. (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; Khachatryan, M. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Khandaker, M. (Norfolk State University, Norfolk, Virginia 23504, USA) ; Kim, A. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Kim, W. (Kyungpook National University, Daegu 41566, Republic of Korea) ; Klein, A. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Klein, F.J. (Catholic University of America, Washington, D.C. 20064, USA) ; Kuhn, S.E. (Old Dominion University, Norfolk, Virginia 23529, USA) ; Kuleshov, S.V. (Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile) (Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia) ; Lanza, L. (INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy) ; Lenisa, P. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) ; Livingston, K. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Lu, H.Y. (Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA) (University of South Carolina, Columbia, South Carolina 29208, USA) ; MacGregor, I.J.D. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Markov, N. (University of Connecticut, Storrs, Connecticut 06269, USA) ; McCracken, M.E. (Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA) ; McKinnon, B. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Meyer, C.A. (Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA) ; Meziani, Z.E. (Temple University, Philadelphia, PA 19122) ; Mineeva, T. (Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile) (University of Connecticut, Storrs, Connecticut 06269, USA) ; Mirazita, M. (INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy) ; Mokeev, V. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Montgomery, R.A. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Movsisyan, A. (INFN, Sezione di Ferrara, 44100 Ferrara, Italy) ; Camacho, C. Munoz (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Nadel-Turonski, P. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (Catholic University of America, Washington, D.C. 20064, USA) ; Niculescu, G. (James Madison University, Harrisonburg, Virginia 22807, USA) ; Osipenko, M. (INFN, Sezione di Genova, 16146 Genova, Italy) ; Ostrovidov, A.I. (Florida State University, Tallahassee, Florida 32306, USA) ; Paolone, M. (Temple University, Philadelphia, PA 19122) ; Paremuzyan, R. (University of New Hampshire, Durham, New Hampshire 03824-3568, USA) ; Park, K. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (University of South Carolina, Columbia, South Carolina 29208, USA) ; Pasyuk, E. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (Arizona State University, Tempe, Arizona 85287-1504, USA) ; Phelps, W. (Florida International University, Miami, Florida 33199, USA) ; Pogorelko, O. (Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia) ; Price, J.W. (California State University, Dominguez Hills, Carson, California 90747, USA) ; Procureur, S. (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Prok, Y. (Old Dominion University, Norfolk, Virginia 23529, USA) (University of Virginia, Charlottesville, Virginia 22901, USA) ; Protopopescu, D. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Ripani, M. (INFN, Sezione di Genova, 16146 Genova, Italy) ; Riser, D. (University of Connecticut, Storrs, Connecticut 06269, USA) ; Rizzo, A. (INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy) (Università di Roma Tor Vergata, 00133 Rome, Italy) ; Rosner, G. (University of Glasgow, Glasgow G12 8QQ, United Kingdom) ; Rossi, P. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy) ; Sabatié, F. (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) ; Salgado, C. (Norfolk State University, Norfolk, Virginia 23504, USA) ; Schumacher, R.A. (Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA) ; Sharabian, Y.G. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Skorodumina, Iu. (University of South Carolina, Columbia, South Carolina 29208, USA) (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia) ; Smith, G.D. (Edinburgh University, Edinburgh EH9 3JZ, United Kingdom) ; Sparveris, N. (Temple University, Philadelphia, PA 19122) ; Stepanyan, S. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Strauch, S. (University of South Carolina, Columbia, South Carolina 29208, USA) ; Taiuti, M. (Università di Genova, 16146 Genova, Italy) ; Tan, J.A. (Kyungpook National University, Daegu 41566, Republic of Korea) ; Ungaro, M. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) (University of Connecticut, Storrs, Connecticut 06269, USA) ; Voskanyan, H. (Yerevan Physics Institute, 375036 Yerevan, Armenia) ; Voutier, E. (Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, France) ; Watts, D.P. (Edinburgh University, Edinburgh EH9 3JZ, United Kingdom) ; Wei, X. (Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA) ; Wood, M.H. (Canisius College, Buffalo, New York, USA) ; Zachariou, N. (Edinburgh University, Edinburgh EH9 3JZ, United Kingdom) ; Zhang, J. (University of Virginia, Charlottesville, Virginia 22901, USA) (Old Dominion University, Norfolk, Virginia 23529, USA) ; Zhao, Z.W. (Old Dominion University, Norfolk, Virginia 23529, USA) (Duke University, Durham, North Carolina 27708-0305, USA)

09 October 2018

Abstract: This paper reports the measurement of polarized and unpolarized cross sections for the epepγ reaction, which is composed of deeply virtual Compton scattering (DVCS) and Bethe-Heitler (BH) processes, at an electron beam energy of 5.88 GeV at the Thomas Jefferson National Accelerator Facility using the Large Acceptance Spectrometer CLAS. The unpolarized cross sections and polarized cross section differences have been measured over broad kinematics, 0.10<xB<0.58, 1.0<Q2<4.8GeV2, and 0.09<t<2.00GeV2. The results are found to be consistent with previous CLAS data, and these new data are discussed in the framework of the generalized parton distribution approach. Calculations with two widely used phenomenological models are approximately compatible with the experimental results over a large portion of the kinematic range of the data.


Published in: Physical Review C 98 (2018)
Published by: APS
DOI: 10.1103/PhysRevC.98.045203
arXiv: 1810.02110
License: CC-BY-4.0



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