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Deep Exclusive Electroproduction of π
Dlamini, M; Karki, B; Ali, S F; Lin, P-J; Georges, F; Ko, H-S; Israel, N; Rashad, M N H; Stefanko, A; Adikaram, D; Ahmed, Z; Albataineh, H; Aljawrneh, B; Allada, K; Allison, S; Alsalmi, S; Androic, D; Aniol, K; Annand, J; Atac, H; Averett, T; Ayerbe Gayoso, C; Bai, X; Bane, J; Barcus, S; Bartlett, K; Bellini, V; Beminiwattha, R; Bericic, J; Biswas, D; Brash, E; Bulumulla, D; Campbell, J; Camsonne, A; Carmignotto, M; Castellano, J; Chen, C; Chen, J-P; Chetry, T; Christy, M E; Cisbani, E; Clary, B; Cohen, E; Compton, N; Cornejo, J C; Covrig Dusa, S; Crowe, B; Danagoulian, S; Danley, T; De Persio, F.
Afiliação
  • Dlamini M; Ohio University, Athens, Ohio 45701, USA.
  • Karki B; Ohio University, Athens, Ohio 45701, USA.
  • Ali SF; Catholic University of America, Washington, DC 20064, USA.
  • Lin PJ; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
  • Georges F; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
  • Ko HS; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France.
  • Israel N; Seoul National University, 1 Gwanak-ro, Gwanak-gu, 08826 Seoul, Korea.
  • Rashad MNH; Ohio University, Athens, Ohio 45701, USA.
  • Stefanko A; Old Dominion University, Norfolk, Virginia 23529, USA.
  • Adikaram D; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Ahmed Z; Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
  • Albataineh H; University of Regina, Regina, Saskatchewan S4S 0A2 Canada.
  • Aljawrneh B; Texas A&M University-Kingsville, Kingsville, Texas 78363, USA.
  • Allada K; North Carolina Ag. and Tech. State University, Greensboro, North Carolina 27411, USA.
  • Allison S; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Alsalmi S; Old Dominion University, Norfolk, Virginia 23529, USA.
  • Androic D; Kent State University, Kent, Ohio 44240, USA.
  • Aniol K; University of Zagreb, Trg Republike Hrvatske 14, 10000 Zagreb, Croatia.
  • Annand J; California State University, Los Angeles, Los Angeles, California 90032, USA.
  • Atac H; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Averett T; Temple University, Philadelphia, Pennsylvania 19122, USA.
  • Ayerbe Gayoso C; The College of William and Mary, Williamsburg, Virginia 23185, USA.
  • Bai X; The College of William and Mary, Williamsburg, Virginia 23185, USA.
  • Bane J; University of Virginia, Charlottesville, Virginia 22904, USA.
  • Barcus S; University of Tennessee, Knoxville, Tennessee 37996, USA.
  • Bartlett K; The College of William and Mary, Williamsburg, Virginia 23185, USA.
  • Bellini V; The College of William and Mary, Williamsburg, Virginia 23185, USA.
  • Beminiwattha R; Istituto Nazionale di Fisica Nucleare, Dipt. Di Fisica delle Uni. di Catania, I-95123 Catania, Italy.
  • Bericic J; Syracuse University, Syracuse, New York 13244, USA.
  • Biswas D; Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
  • Brash E; Hampton University, Hampton, Virginia 23669, USA.
  • Bulumulla D; Christopher Newport University, Newport News, Virginia 23606, USA.
  • Campbell J; Old Dominion University, Norfolk, Virginia 23529, USA.
  • Camsonne A; Dalhousie University, Nova Scotia B3H 4R2, Canada.
  • Carmignotto M; Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
  • Castellano J; Catholic University of America, Washington, DC 20064, USA.
  • Chen C; Florida International University, Miami, Florida 33199, USA.
  • Chen JP; Hampton University, Hampton, Virginia 23669, USA.
  • Chetry T; Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
  • Christy ME; Ohio University, Athens, Ohio 45701, USA.
  • Cisbani E; Hampton University, Hampton, Virginia 23669, USA.
  • Clary B; Istituto Nazionale di Fisica Nucleare-Sezione di Roma, P.le Aldo Moro, 2-00185 Roma, Italy.
  • Cohen E; University of Connecticut, Storrs, Connecticut 06269, USA.
  • Compton N; Tel Aviv University, Tel Aviv 699780 1, Israel.
  • Cornejo JC; Ohio University, Athens, Ohio 45701, USA.
  • Covrig Dusa S; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Crowe B; The College of William and Mary, Williamsburg, Virginia 23185, USA.
  • Danagoulian S; Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
  • Danley T; North Carolina Central University, Durham, North Carolina 27707, USA.
  • De Persio F; North Carolina Ag. and Tech. State University, Greensboro, North Carolina 27411, USA.
Phys Rev Lett ; 127(15): 152301, 2021 Oct 08.
Article em En | MEDLINE | ID: mdl-34678020
ABSTRACT
We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of x_{B} (0.36, 0.48, and 0.60) and Q^{2} (3.1 to 8.4 GeV^{2}) obtained from Jefferson Lab Hall A experiment E12-06-014. The corresponding structure functions dσ_{T}/dt+εdσ_{L}/dt, dσ_{TT}/dt, dσ_{LT}/dt, and dσ_{LT^{'}}/dt are extracted as a function of the proton momentum transfer t-t_{min}. The results suggest the amplitude for transversely polarized virtual photons continues to dominate the cross section throughout this kinematic range. The data are well described by calculations based on transversity generalized parton distributions coupled to a helicity flip distribution amplitude of the pion, thus providing a unique way to probe the structure of the nucleon.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article