Publications
Publication Information
Title | Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering |
Authors | Mohammad Hattawy, Nathan Baltzell, Raphael Dupre, Stephen Bueltmann, Raffaella De Vita, Ahmed El Alaoui, Lamiaa El Fassi, Hovanes Egiyan, Francois-Xavier Girod-Gard, Michel Guidal, Kawtar Hafidi, David Jenkins, Simonetta Liuti, Yohann Perrin, Stepan Stepanyan, Bayram Torayev, Eric Voutier, Shankar Adhikari, Giovanni Angelini, Carlos Ayerbe Gayoso, Luca Barion, Marco Battaglieri, Ivan Bedlinskiy, Angela Biselli, Francesco Bossu, William Brooks, Frank Cao, Daniel Carman, Andrea Celentano, Pierre Chatagnon, Taya Chetry, GIUSEPPE CIULLO, L. Clark, Philip Cole, Marco Contalbrigo, Volker Crede, Annalisa D'Angelo, Natalya Dashyan, Enzo De Sanctis, Maxime Defurne, Alexandre Deur, Stefan Diehl, Chaden Djalali, Mathieu Ehrhart, Paul Eugenio, Stuart Fegan, Alessandra Filippi, Ahmed Fradi, Michel Garcon, Gagik Gavalian, Nerses Gevorgyan, Gerard Gilfoyle, Kevin Giovanetti, Evgeny Golovach, Ralf Gothe, Keith Griffioen, Nathan Harrison, Florian Hauenstein, Timothy Hayward, David Heddle, Ken Hicks, Maurik Holtrop, Yordanka Ilieva, David Ireland, Evgeny Isupov, Sereres Johnston, Dustin Keller, Grigor Khachatryan, Mariana Khachatryan, Achyut Khanal, Mahbub Khandaker, Chan Kim, Wooyoung Kim, Franz Klein, Valery Kubarovsky, Sebastian Kuhn, Lucilla Lanza, Md Latiful Kabir, Paolo Lenisa, Kenneth Livingston, Ian MacGregor, Dominique Marchand, Nikolay Markov, Michael Mayer, Bryan McKinnon, Zein-Eddine Meziani, Taisiya Mineeva, Marco Mirazita, Rachel Montgomery, Carlos Munoz Camacho, Pawel Nadel-Turonski, Silvia Niccolai, Alexander Ostrovidov, Luciano Pappalardo, Rafayel Paremuzyan, Eugene Pasyuk, Oleg Pogorelko, Jiwan Poudel, Yelena Prok, Dan Protopopescu, Marco Ripani, David Riser, Alessandro Rizzo, Guenther Rosner, Patrizia Rossi, Franck Sabatie, Carlos Salgado, Reinhard Schumacher, Youri Sharabian, Iuliia Skorodumina, Daria Sokhan, Orlando Soto Sandoval, Nikolaos Sparveris, Steffen Strauch, Mauro Taiuti, Joshua Artem Tan, Nicholas Tyler, Maurizio Ungaro, Hakob Voskanyan, Rong Wang, Daniel Watts, Xiangdong Wei, Lawrence Weinstein, Micheal Wood, Nicholas Zachariou, Jixie Zhang, Zhiwen Zhao |
JLAB number | JLAB-PHY-19-2819 |
LANL number | arXiv:1812.07628 |
Other number | DOE/OR/23177-4617 |
Document Type(s) | (Journal Article) |
Associated with EIC: | No |
Supported by Jefferson Lab LDRD Funding: | No |
Funding Source: | Nuclear Physics (NP) |
Journal Compiled for Physical Review Letters Volume 123 Page(s) 032502 Refereed | |
Publication Abstract: | We report the first beam spin asymmetry (BSA) measurement of incoherent deeply virtual Compton scattering (DVCS) off $^4$He. The data were accumulated using a 6 GeV longitudinally polarized electron beam incident on a pressurized $^4$He gaseous target placed within the CLAS spectrometer in Hall-B at the Thomas Jefferson National Accelerator Facility. The azimuthal angle ($\phi$) dependence of the BSA was studied in a wide range of virtual photon and scattered proton kinematics. The $Q^2$, $x_B$, and $t$ dependencies of the BSA on the bound proton are compared with those on the free proton. In the whole kinematical region of our measurements, the BSA on the bound proton is smaller by $20\%$ to $40\%$, indicating possible medium modification of its partonic structure. This measurement opens a new avenue for studying the structure of bound nucleons and for exploring the origin of the EMC effect using the framework of the generalized parton distributions. |
Experiment Numbers: | E08-024 |
Group: | Hall B |
Document: | |
DOI: | https://doi.org/10.1103/PhysRevLett.123.032502 |
Accepted Manuscript: | 1812.07628.pdf |
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