Publications
Publication Information
| Title | Measurement of the beam spin asymmetry of ep -> e'p'n' in the deep-inelastic regime with CLAS |
| Authors | Bo Zhao, Andrey Kim, Kyungseon Joo, Ivan Bedlinskiy, Wooyoung Kim, Valery Kubarovsky, Maurizio Ungaro, Shankar Adhikari, Zulkaida Akbar, Giovanni Angelini, Harutyun Avagyan, Jacques Ball, Nathan Baltzell, Luca Barion, Mikhail Bashkanov, Marco Battaglieri, Angela Biselli, Sergey Boyarinov, William Briscoe, William Brooks, Volker Burkert, Daniel Carman, Andrea Celentano, Pierre Chatagnon, Taya Chetry, GIUSEPPE CIULLO, Brandon Clary, Philip Cole, Marco Contalbrigo, Volker Crede, Annalisa D'Angelo, Natalya Dashyan, Raffaella De Vita, Enzo De Sanctis, Maxime Defurne, Alexandre Deur, Stefan Diehl, Chaden Djalali, Raphael Dupre, Hovanes Egiyan, Mathieu Ehrhart, Ahmed El Alaoui, Lamiaa El Fassi, Paul Eugenio, Alessandra Filippi, Tony Forest, Gagik Gavalian, Yeranuhi Ghandilyan, Gerard Gilfoyle, Francois-Xavier Girod-Gard, Evgeny Golovach, Ralf Gothe, Keith Griffioen, Michel Guidal, Lei Guo, Kawtar Hafidi, Hayk Hakobyan, Nathan Harrison, Mohammad Hattawy, David Heddle, Ken Hicks, Maurik Holtrop, Yordanka Ilieva, David Ireland, Boris Ishkhanov, Evgeny Isupov, David Jenkins, Hyon-Suk Jo, Sereres Johnston, Md. Latiful Kabir, Dustin Keller, Grigor Khachatryan, Mahbub Khandaker, Andi Klein, Franz Klein, Sebastian Kuhn, Sergey Kuleshov, Lucilla Lanza, Paolo Lenisa, Kenneth Livingston, Ian MacGregor, Dominique Marchand, Nikolay Markov, Bryan McKinnon, Curtis Meyer, Zein-Eddine Meziani, Marco Mirazita, Viktor Mokeev, Rachel Montgomery, Carlos Munoz Camacho, Silvia Niccolai, Gabriel Niculescu, Mikhail Osipenko, Alexander Ostrovidov, Michael Paolone, Rafayel Paremuzyan, Kil Park, Oleg Pogorelko, John Price, Yelena Prok, Dan Protopopescu, Marco Ripani, Alessandro Rizzo, Guenther Rosner, Patrizia Rossi, Franck Sabatie, Carlos Salgado, Reinhard Schumacher, Youri Sharabian, Iuliia Skorodumina, Gregory Smith, Daria Sokhan, Nikolaos Sparveris, Stepan Stepanyan, Igor Strakovsky, Steffen Strauch, Mauro Taiuti, Joshua Artem Tan, Hakob Voskanyan, Eric Voutier, Rong Wang, Xiangdong Wei, Michael Wood, Nicholas Zachariou, Jixie Zhang, Zhiwen Zhao |
| JLAB number | JLAB-PHY-19-2820 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4643 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | FG02-96ER40950 |
|
Journal Compiled for Physics Letters B Volume 789 Page(s) 426-431 Refereed | |
| Publication Abstract: | The beam spin asymmetry of the exclusive pseudoscalar channel ep -> e'p'n' was measured for the first time in the deep-inelastic regime (W > 2 GeV/c^2 and Q^2 > 1 GeV^2/c^2) using a longitudinally polarized 5.78 GeV electron beam at Jefferson Lab with the CEBAF Large Acceptance Spectrometer. The data were accumulated in 144 four-dimensional bins of Q^2, x_B, ?t and sin phi over a wide kinematic range, where phi is the azimuthal angle between the lepton and hadron scattering planes, The measured azimuthal dependence with large amplitudes of the moments is a clear indication of a substantial contribution to the polarized cross-section from transversely polarized virtual photons. In the framework of generalized parton distributions (GPDs) this contribution is expressed via longitudinal-transverse interference between chiral-even and chiral-odd GPDs. The experimental results are compared to the existing theoretical models demonstrating the sensitivity to the product of chiral-odd and chiral-even GPDs and provide new constraints to the existing GPD parameterizations. |
| Experiment Numbers: | |
| Group: | Hall B |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2018.12.065 |
| Accepted Manuscript: | 1-s2.0-S0370269319300024-main.pdf |
| Supporting Documents: | |
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