Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions

H. S. Jo; F. X. Girod; H. Avakian; V. D. Burkert; M. Garçon; M. Guidal; V. Kubarovsky; S. Niccolai; P. Stoler; K. P. Adhikari; D. Adikaram; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; J. Ball; N. A. Baltzell; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; S. Boiarinov; W. J. Briscoe; W. K. Brooks; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; L. Colaneri; P. L. Cole; N. Compton; M. Contalbrigo; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; C. Djalali; R. Dupre; A. El Alaoui; L. El Fassi; L. Elouadrhiri; G. Fedotov; S. Fegan; A. Filippi; J. A. Fleming; B. Garillon; N. Gevorgyan; Y. Ghandilyan; G. P. Gilfoyle; K. L. Giovanetti; J. T. Goetz; E. Golovatch; R. W. Gothe; K. A. Griffioen; B. Guegan; N. Guler; L. Guo; K. Hafidi; H. Hakobyan; N. Harrison; M. Hattawy; K. Hicks; N. Hirlinger Saylor; D. Ho; M. Holtrop; S. M. Hughes; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; D. Jenkins; K. Joo; S. Joosten; D. Keller; G. Khachatryan; M. Khandaker; A. Kim; W. Kim; A. Klein; F. J. Klein; S. E. Kuhn; S. V. Kuleshov; P. Lenisa; K. Livingston; H. Y. Lu; I. J.D. Macgregor; B. McKinnon; Z. E. Meziani; M. Mirazita; V. Mokeev; R. A. Montgomery; H. Moutarde; A. Movsisyan; E. Munevar; C. Munoz Camacho; P. Nadel-Turonski; L. A. Net; G. Niculescu; M. Osipenko; A. I. Ostrovidov; M. Paolone; K. Park; E. Pasyuk; J. J. Phillips; S. Pisano; O. Pogorelko; J. W. Price; S. Procureur; Y. Prok; A. J.R. Puckett; B. A. Raue; M. Ripani; A. Rizzo; G. Rosner; P. Rossi; P. Roy; F. Sabatié; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; A. Simonyan; Iu Skorodumina; G. D. Smith; D. Sokhan; N. Sparveris; S. Stepanyan; I. I. Strakovsky; S. Strauch; V. Sytnik; Ye Tian; S. Tkachenko; M. Ungaro; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; X. Wei; L. B. Weinstein; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; Z. W. Zhao; I. Zonta

doi:10.1103/PhysRevLett.115.212003

Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions

H. S. Jo, F. X. Girod, H. Avakian, V. D. Burkert, M. Garçon, M. Guidal, V. Kubarovsky, S. Niccolai, P. Stoler, K. P. Adhikari, D. Adikaram, M. J. Amaryan, M. D. Anderson, S. Anefalos Pereira, J. Ball, N. A. Baltzell, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. BiselliS. Boiarinov, W. J. Briscoe, W. K. Brooks, D. S. Carman, A. Celentano, S. Chandavar, G. Charles, L. Colaneri, P. L. Cole, N. Compton, M. Contalbrigo, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, R. Dupre, A. El Alaoui, L. El Fassi, L. Elouadrhiri, G. Fedotov, S. Fegan, A. Filippi, J. A. Fleming, B. Garillon, N. Gevorgyan, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, J. T. Goetz, E. Golovatch, R. W. Gothe, K. A. Griffioen, B. Guegan, N. Guler, L. Guo, K. Hafidi, H. Hakobyan, N. Harrison, M. Hattawy, K. Hicks, N. Hirlinger Saylor, D. Ho, M. Holtrop, S. M. Hughes, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, D. Jenkins, K. Joo, S. Joosten, D. Keller, G. Khachatryan, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, S. E. Kuhn, S. V. Kuleshov, P. Lenisa, K. Livingston, H. Y. Lu, I. J.D. Macgregor, B. McKinnon, Z. E. Meziani, M. Mirazita, V. Mokeev, R. A. Montgomery, H. Moutarde, A. Movsisyan, E. Munevar, C. Munoz Camacho, P. Nadel-Turonski, L. A. Net, G. Niculescu, M. Osipenko, A. I. Ostrovidov, M. Paolone, K. Park, E. Pasyuk, J. J. Phillips, S. Pisano, O. Pogorelko, J. W. Price, S. Procureur, Y. Prok, A. J.R. Puckett, B. A. Raue, M. Ripani, A. Rizzo, G. Rosner, P. Rossi, P. Roy, F. Sabatié, C. Salgado, D. Schott, R. A. Schumacher, E. Seder, A. Simonyan, Iu Skorodumina, G. D. Smith, D. Sokhan, N. Sparveris, S. Stepanyan, I. I. Strakovsky, S. Strauch, V. Sytnik, Ye Tian, S. Tkachenko, M. Ungaro, H. Voskanyan, E. Voutier, N. K. Walford, D. P. Watts, X. Wei, L. B. Weinstein, M. H. Wood, N. Zachariou, L. Zana, J. Zhang, Z. W. Zhao, I. Zonta

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Abstract

Unpolarized and beam-polarized fourfold cross sections (d4σ/dQ2dxBdtdφ) for the ep→e′p′γ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 (Q2,xB,t) bins over the widest phase space ever explored in the valence-quark region. Several models of generalized parton distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD H, expected to be the dominant contributor to these observables. Through a leading-twist extraction of Compton form factors, these results support the model predictions of a larger nucleon size at lower quark-momentum fraction xB.

Original language	English
Article number	212003
Journal	Physical Review Letters
Volume	115
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.115.212003
State	Published - 17 Nov 2015

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10.1103/PhysRevLett.115.212003

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Jo, H. S., Girod, F. X., Avakian, H., Burkert, V. D., Garçon, M., Guidal, M., Kubarovsky, V., Niccolai, S., Stoler, P., Adhikari, K. P., Adikaram, D., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Bedlinskiy, I., ... Zonta, I. (2015). Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions. Physical Review Letters, 115(21), Article 212003. https://doi.org/10.1103/PhysRevLett.115.212003

@article{a58ff111fd6b4e04b22e9a0c871f1f78,

title = "Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions",

abstract = "Unpolarized and beam-polarized fourfold cross sections (d4σ/dQ2dxBdtdφ) for the ep→e′p′γ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 (Q2,xB,t) bins over the widest phase space ever explored in the valence-quark region. Several models of generalized parton distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD H, expected to be the dominant contributor to these observables. Through a leading-twist extraction of Compton form factors, these results support the model predictions of a larger nucleon size at lower quark-momentum fraction xB.",

author = "Jo, {H. S.} and Girod, {F. X.} and H. Avakian and Burkert, {V. D.} and M. Gar{\c c}on and M. Guidal and V. Kubarovsky and S. Niccolai and P. Stoler and Adhikari, {K. P.} and D. Adikaram and Amaryan, {M. J.} and Anderson, {M. D.} and {Anefalos Pereira}, S. and J. Ball and Baltzell, {N. A.} and M. Battaglieri and V. Batourine and I. Bedlinskiy and Biselli, {A. S.} and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and L. Colaneri and Cole, {P. L.} and N. Compton and M. Contalbrigo and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and C. Djalali and R. Dupre and Alaoui, {A. El} and Fassi, {L. El} and L. Elouadrhiri and G. Fedotov and S. Fegan and A. Filippi and Fleming, {J. A.} and B. Garillon and N. Gevorgyan and Y. Ghandilyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Goetz, {J. T.} and E. Golovatch and Gothe, {R. W.} and Griffioen, {K. A.} and B. Guegan and N. Guler and L. Guo and K. Hafidi and H. Hakobyan and N. Harrison and M. Hattawy and K. Hicks and {Hirlinger Saylor}, N. and D. Ho and M. Holtrop and Hughes, {S. M.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and D. Jenkins and K. Joo and S. Joosten and D. Keller and G. Khachatryan and M. Khandaker and A. Kim and W. Kim and A. Klein and Klein, {F. J.} and Kuhn, {S. E.} and Kuleshov, {S. V.} and P. Lenisa and K. Livingston and Lu, {H. Y.} and Macgregor, {I. J.D.} and B. McKinnon and Meziani, {Z. E.} and M. Mirazita and V. Mokeev and Montgomery, {R. A.} and H. Moutarde and A. Movsisyan and E. Munevar and {Munoz Camacho}, C. and P. Nadel-Turonski and Net, {L. A.} and G. Niculescu and M. Osipenko and Ostrovidov, {A. I.} and M. Paolone and K. Park and E. Pasyuk and Phillips, {J. J.} and S. Pisano and O. Pogorelko and Price, {J. W.} and S. Procureur and Y. Prok and Puckett, {A. J.R.} and Raue, {B. A.} and M. Ripani and A. Rizzo and G. Rosner and P. Rossi and P. Roy and F. Sabati{\'e} and C. Salgado and D. Schott and Schumacher, {R. A.} and E. Seder and A. Simonyan and Iu Skorodumina and Smith, {G. D.} and D. Sokhan and N. Sparveris and S. Stepanyan and Strakovsky, {I. I.} and S. Strauch and V. Sytnik and Ye Tian and S. Tkachenko and M. Ungaro and H. Voskanyan and E. Voutier and Walford, {N. K.} and Watts, {D. P.} and X. Wei and Weinstein, {L. B.} and Wood, {M. H.} and N. Zachariou and L. Zana and J. Zhang and Zhao, {Z. W.} and I. Zonta",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = nov,

day = "17",

doi = "10.1103/PhysRevLett.115.212003",

language = "English",

volume = "115",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

Jo, HS, Girod, FX, Avakian, H, Burkert, VD, Garçon, M, Guidal, M, Kubarovsky, V, Niccolai, S, Stoler, P, Adhikari, KP, Adikaram, D, Amaryan, MJ, Anderson, MD, Anefalos Pereira, S, Ball, J, Baltzell, NA, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, AS, Boiarinov, S, Briscoe, WJ, Brooks, WK, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Colaneri, L, Cole, PL, Compton, N, Contalbrigo, M, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Djalali, C, Dupre, R, Alaoui, AE, Fassi, LE, Elouadrhiri, L, Fedotov, G, Fegan, S, Filippi, A, Fleming, JA, Garillon, B, Gevorgyan, N, Ghandilyan, Y, Gilfoyle, GP, Giovanetti, KL, Goetz, JT, Golovatch, E, Gothe, RW, Griffioen, KA, Guegan, B, Guler, N, Guo, L, Hafidi, K, Hakobyan, H, Harrison, N, Hattawy, M, Hicks, K, Hirlinger Saylor, N, Ho, D, Holtrop, M, Hughes, SM, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Jenkins, D, Joo, K, Joosten, S, Keller, D, Khachatryan, G, Khandaker, M, Kim, A, Kim, W, Klein, A, Klein, FJ, Kuhn, SE, Kuleshov, SV, Lenisa, P, Livingston, K, Lu, HY, Macgregor, IJD, McKinnon, B, Meziani, ZE, Mirazita, M, Mokeev, V, Montgomery, RA, Moutarde, H, Movsisyan, A, Munevar, E, Munoz Camacho, C, Nadel-Turonski, P, Net, LA, Niculescu, G, Osipenko, M, Ostrovidov, AI, Paolone, M, Park, K, Pasyuk, E, Phillips, JJ, Pisano, S, Pogorelko, O, Price, JW, Procureur, S, Prok, Y, Puckett, AJR, Raue, BA, Ripani, M, Rizzo, A, Rosner, G, Rossi, P, Roy, P, Sabatié, F, Salgado, C, Schott, D, Schumacher, RA, Seder, E, Simonyan, A, Skorodumina, I, Smith, GD, Sokhan, D, Sparveris, N, Stepanyan, S, Strakovsky, II, Strauch, S, Sytnik, V, Tian, Y, Tkachenko, S, Ungaro, M, Voskanyan, H, Voutier, E, Walford, NK, Watts, DP, Wei, X, Weinstein, LB, Wood, MH, Zachariou, N, Zana, L, Zhang, J, Zhao, ZW & Zonta, I 2015, 'Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions', Physical Review Letters, vol. 115, no. 21, 212003. https://doi.org/10.1103/PhysRevLett.115.212003

TY - JOUR

T1 - Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions

AU - Jo, H. S.

AU - Girod, F. X.

AU - Avakian, H.

AU - Burkert, V. D.

AU - Garçon, M.

AU - Guidal, M.

AU - Kubarovsky, V.

AU - Niccolai, S.

AU - Stoler, P.

AU - Adhikari, K. P.

AU - Adikaram, D.

AU - Amaryan, M. J.

AU - Anderson, M. D.

AU - Anefalos Pereira, S.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Compton, N.

AU - Contalbrigo, M.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Dupre, R.

AU - Alaoui, A. El

AU - Fassi, L. El

AU - Elouadrhiri, L.

AU - Fedotov, G.

AU - Fegan, S.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Garillon, B.

AU - Gevorgyan, N.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Goetz, J. T.

AU - Golovatch, E.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guegan, B.

AU - Guler, N.

AU - Guo, L.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Harrison, N.

AU - Hattawy, M.

AU - Hicks, K.

AU - Hirlinger Saylor, N.

AU - Ho, D.

AU - Holtrop, M.

AU - Hughes, S. M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Jenkins, D.

AU - Joo, K.

AU - Joosten, S.

AU - Keller, D.

AU - Khachatryan, G.

AU - Khandaker, M.

AU - Kim, A.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Lenisa, P.

AU - Livingston, K.

AU - Lu, H. Y.

AU - Macgregor, I. J.D.

AU - McKinnon, B.

AU - Meziani, Z. E.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Moutarde, H.

AU - Movsisyan, A.

AU - Munevar, E.

AU - Munoz Camacho, C.

AU - Nadel-Turonski, P.

AU - Net, L. A.

AU - Niculescu, G.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Paolone, M.

AU - Park, K.

AU - Pasyuk, E.

AU - Phillips, J. J.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Price, J. W.

AU - Procureur, S.

AU - Prok, Y.

AU - Puckett, A. J.R.

AU - Raue, B. A.

AU - Ripani, M.

AU - Rizzo, A.

AU - Rosner, G.

AU - Rossi, P.

AU - Roy, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Seder, E.

AU - Simonyan, A.

AU - Skorodumina, Iu

AU - Smith, G. D.

AU - Sokhan, D.

AU - Sparveris, N.

AU - Stepanyan, S.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Sytnik, V.

AU - Tian, Ye

AU - Tkachenko, S.

AU - Ungaro, M.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Watts, D. P.

AU - Wei, X.

AU - Weinstein, L. B.

AU - Wood, M. H.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhang, J.

AU - Zhao, Z. W.

AU - Zonta, I.

PY - 2015/11/17

Y1 - 2015/11/17

N2 - Unpolarized and beam-polarized fourfold cross sections (d4σ/dQ2dxBdtdφ) for the ep→e′p′γ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 (Q2,xB,t) bins over the widest phase space ever explored in the valence-quark region. Several models of generalized parton distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD H, expected to be the dominant contributor to these observables. Through a leading-twist extraction of Compton form factors, these results support the model predictions of a larger nucleon size at lower quark-momentum fraction xB.

AB - Unpolarized and beam-polarized fourfold cross sections (d4σ/dQ2dxBdtdφ) for the ep→e′p′γ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 (Q2,xB,t) bins over the widest phase space ever explored in the valence-quark region. Several models of generalized parton distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD H, expected to be the dominant contributor to these observables. Through a leading-twist extraction of Compton form factors, these results support the model predictions of a larger nucleon size at lower quark-momentum fraction xB.

UR - http://www.scopus.com/inward/record.url?scp=84948430738&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.115.212003

DO - 10.1103/PhysRevLett.115.212003

M3 - Article

AN - SCOPUS:84948430738

SN - 0031-9007

VL - 115

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 212003

ER -

Cross Sections for the Exclusive Photon Electroproduction on the Proton and Generalized Parton Distributions

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