Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory

Hu, T.; Akbar, Z.; Crede, V.; Adhikari, K. P.; Adhikari, S.; Amaryan, M. J.; Angelini, G.; Asryan, G.; Atac, H.; Ayerbe Gayoso, C.; Barion, L.; Battaglieri, M.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bossù, F.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K.; Carman, D. S.; Carvajal, J.; Celentano, A.; Chatagnon, P.; Chetry, T.; Ciullo, G.; Clark, L.; Clary, B. A.; Cole, P. L.; Contalbrigo, M.; Cruz-Torres, R.; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Dugger, M.; Dupre, R.; Egiyan, H.; Ehrhart, M.; El Alaoui, A.; El Fassi, L.; Eugenio, P.; Fedotov, G.; Fersch, R.; Filippi, A.; Gavalian, G.; Gilfoyle, G. P.; Girod, F. X.; Glazier, D. I.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Harrison, N.; Hattawy, M.; Hayward, T. B.; Heddle, D.; Hicks, K.; Hobart, A.; Holtrop, M.; Ilieva, Y.; Illari, I.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Joosten, S.; Keller, D.; Khachatryan, M.; Khanal, A.; Khandaker, M.; Kim, A.; Kim, C. W.; Kim, W.; Klein, F. J.; Kubarovsky, V.; Lanza, L.; Leali, M.; Lenisa, P.; Livingston, K.; MacGregor, I. D.; Marchand, D.; Markov, N.; Mascagna, V.; McCracken, M. E.; McKinnon, B.; Meyer, C. A.; Meziani, Z. E.; Mineeva, T.; Mokeev, V.; Movsisyan, A.; Munevar, E.; Munoz Camacho, C.; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; O'Connell, T.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Phelps, W.; Pogorelko, O.; Poudel, J.; Price, J. W.; Prok, Y.; Protopopescu, D.; Raue, B. A.; Ripani, M.; Ritman, J.; Rizzo, A.; Rosner, G.; Rowley, J.; Sabatié, F.; Salgado, C.; Schmidt, A.; Schumacher, R. A.; Sharabian, Y. G.; Shrestha, U.; Skorodumina, Iu; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Tyler, N.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Watts, D. P.; Wei, K.; Wei, X.; Wood, M. H.; Zachariou, N.; Zhang, J.; Zhao, Z. W.

doi:10.1103/physrevc.102.065203

Title: Photoproduction of η mesons off the proton for 1.2 < E_γ < 4.7GeV using CLAS at Jefferson Laboratory

Journal Article · Mon Dec 14 00:00:00 EST 2020 · Physical Review C

DOI:https://doi.org/10.1103/physrevc.102.065203· OSTI ID:1735831

Hu, T.; Akbar, Z.;

; Adhikari, K. P.; Adhikari, S.; Amaryan, M. J.; Angelini, G.; Asryan, G.; Atac, H.; Ayerbe Gayoso, C.; Barion, L.; Battaglieri, M.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bossù, F.; Boiarinov, S.; Briscoe, W. J.; Brooks, W. K. more »

Photoproduction cross sections are reported for the reaction γ p → p η using energy-tagged photons and the CLAS spectrometer at Jefferson Laboratory. The η mesons are detected in their dominant charged decay mode, η → π + π - π0, and results on differential cross sections are presented for incident photon energies between 1.2 and 4.7 GeV. These new η photoproduction data are consistent with earlier CLAS results but extend the energy range beyond the nucleon resonance region into the Regge regime. The normalized angular distributions are also compared with the experimental results from several other experiments, and with predictions of η -MAID 2018 and the latest solution of the Bonn-Gatchina coupled-channel analysis. Differential cross sections d σ / d t are presented for incident photon energies E γ > 2.9 GeV ( W > 2.5 GeV ), and compared with predictions which are based on Regge trajectories exchange in the t -channel (Regge models). The data confirm the expected dominance of ρ , ω vector-meson exchange in an analysis by the Joint Physics Analysis Center.

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Research Organization:: Mississippi State Univ., Mississippi State, MS (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Centre National de la Recherche Scientifique (CNRS); National Research Foundation of Korea (NRF); Instituto Nazionale di Fisica Nucleare (INFN); Commissariat a l’Energie Atomique (CEA); Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); United Kingdom Science and Technology Facilities Council; Scottish Universities Physics Alliance (SUPA)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: FG02-07ER41528; FG02-92ER40735; AC05-06OR23177; AC02-06CH11357

OSTI ID:: 1735831

Alternate ID(s):: OSTI ID: 1781686; OSTI ID: 1787253

Report Number(s):: JLAB-PHY-20-3201; DOE/OR/23177-4979; arXiv:2006.01361; TRN: US2205258

Journal Information:: Physical Review C, Vol. 102, Issue 6; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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mesons off the proton using CLAS at Jefferson Laboratory

Journal Article · Fri May 04 00:00:00 EDT 2018 · Physical Review C · OSTI ID:1735831

Roy, P.; Akbar, Z.; Park, S.; +143 more

Photoproduction of

π^{0}

mesons off protons and neutrons in the second and third nucleon resonance regions

Journal Article · Thu Jun 21 00:00:00 EDT 2018 · Physical Review C · OSTI ID:1735831

Dieterle, M.; Werthmüller, D.; Abt, S.; +81 more

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Photonuclear reactions
QCD in nuclear reactions
resonance reactions
light mesons
protons

Title: Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory

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Title: Photoproduction of η mesons off the proton for 1.2 < E_γ < 4.7GeV using CLAS at Jefferson Laboratory