Publications
Publication Information
| Title | First-time measurement of Timelike Compton Scattering | ||
| Authors | Pierre Chatagnon, Silvia Niccolai, Stepan Stepanyan, Moskov Amaryan, Giovanni Angelini, Whitney Armstrong, Hamza Atac, Carlos Ayerbe Gayoso, Nathan Baltzell, Luca Barion, Mikhail Bashkanov, Marco Battaglieri, Ivan Bedlinskiy, Fatiha Benmokhtar, Andrea Bianconi, Letterio Biondo, Angela Biselli, Mariangela Bondi, Francesco Bossu, Sergey Boyarinov, William Briscoe, William Brooks, Dilini Bulumulla, Volker Burkert, Daniel Carman, Jose Carvajal, Mylene Caudron, Andrea Celentano, Taya Chetry, GIUSEPPE CIULLO, L. Clark, Philip Cole, Marco Contalbrigo, Giovanni Costantini, Volker Crede, Annalisa D'Angelo, Natalya Dashyan, Maxime Defurne, Raffaella De Vita, Alexandre Deur, Stefan Diehl, Chaden Djalali, Raphael Dupre, Hovanes Egiyan, Mathieu Ehrhart, Ahmed El Alaoui, Lamiaa El Fassi, Latifa Elouadrhiri, Stuart Fegan, Robert Fersch, Alessandra Filippi, Gagik Gavalian, Yeranuhi Ghandilyan, Gerard Gilfoyle, Francois-Xavier Girod-Gard, Derek Glazier, Anna Rusova, Ralf Gothe, Yuri Gotra, Keith Griffioen, Michel Guidal, Lei Guo, Hayk Hakobyan, Mohammad Hattawy, Timothy Hayward, David Heddle, Adam Hobart, Maurik Holtrop, Charles Hyde, Yordanka Ilieva, David Ireland, Evgeny Isupov, Hyon-Suk Jo, Kyungseon Joo, Md. Latiful Kabir, Dustin Keller, Grigor Khachatryan, Achyut Khanal, Andrey Kim, Wooyoung Kim, Aron Kripko, Valery Kubarovsky, Sebastian Kuhn, Lucilla Lanza, Marco Leali, Sangbaek Lee, Paolo Lenisa, Kenneth Livingston, Ian Macgregor, Dominique Marchand, Luca Marsicano, Valerio Mascagna, Bryan McKinnon, Christopher McLauchlin, Stefano Migliorati, Marco Mirazita, Viktor Mokeev, Rachel Montgomery, Carlos Munoz Camacho, Pawel Nadel-Turonski, Paul Naidoo, Krishna Neupane, Thomas O'Connell, Mikhail Osipenko, Mathieu Ouillon, Pushpa Pandey, Michael Paolone, Luciano Pappalardo, Rafayel Paremuzyan, Eugene Pasyuk, William Phelps, Oleg Pogorelko, Jiwan Poudel, J. Price, Yelena Prok, Brian Raue, Trevor Reed, Marco Ripani, Alessandro Rizzo, Patrizia Rossi, Joseph Rowley, Franck Sabatie, Axel Schmidt, Efrain Segarra, Youri Sharabian, Evgeny Shirokov, Utsav Shrestha, Daria Sokhan, Orlando Soto Sandoval, Nikolaos Sparveris, Igor Strakovsky, Steffen Strauch, Nicholas Tyler, Richard Tyson, Maurizio Ungaro, Simone Vallarino, Luca Venturelli, Hakob Voskanyan, Anselm Vossen, Eric Voutier, Daniel Watts, Kevin Wei, Xiangdong Wei, Robert Wishart, Bradley Yale, Nicholas Zachariou, Jixie Zhang, zhiwen zhao | ||
| JLAB number | JLAB-PHY-21-3488 | ||
| LANL number | arXiv:2108.11746 | ||
| Other number | DOE/OR/23177-5305 | ||
| Document Type(s) | (Journal Article) | ||
| Associated with EIC: | No | ||
| Supported by Jefferson Lab LDRD Funding: | No | ||
| Funding Source: | Nuclear Physics (NP) | ||
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Journal Compiled for Physical Review Letters Volume 127 Page(s) 262501 Refereed | |||
| Publication Abstract: | We present the first measurement of the Timelike Compton Scattering process, yp -> p'y* (y* -> e+e-), obtained with the CLAS12 detector at Jefferson Lab. The photon beam polarization and the decay lepton angular asymmetries are reported in the range of timelike photon virtualities 2.25 < Q'2 < 9 GeV2, squared momentum transferred 0.1 < -t < 0.8 GeV2, and average total center-of-mass energy squared s = 14.5 GeV2. The photon beam polarization asymmetry, similar to the beam-spin asymmetry in Deeply Virtual Compton Scattering, is sensitive to the imaginary part of the Compton Form Factors and provides a way to test the universality of the Generalized Parton Distributions. The angular asymmetry of the decay leptons accesses the real part of the Compton Form Factors and thus the D-term in the parametrization of the Generalized Parton Distributions. | ||
| Experiment Numbers: | E12-12-001 | ||
| Group: | Hall B | ||
| Document: | |||
| DOI: | https://doi.org/10.1103/PhysRevLett.127.262501 | ||
| Accepted Manuscript: | PhysRevLett.127.262501.pdf | ||
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