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Publication Information
| Title | A multidimensional study of the structure function ratio sigma_LT'/sigma^0 from hard exclusive pi^+ electro-production off protons in the GPD regime | ||||
| Abstract | A multidimensional extraction of the structure function ratio ?LT?/?0 from the hard exclusive ?ep ? e?n?+ reaction above the resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam on a liquid-hydrogen target and the CLAS12 spectrometer at Jefferson Lab. The measurements focus on the very forward regime (t/Q2 ? 1) with a wide kinematic range of xB in the valence regime (0.17 < xB < 0.55), and virtualities Q2 ranging from 1.5 GeV2 up to 6 GeV2. The results and their comparison to theoretical models based on Generalized Parton Distributions demonstrate the sensitivity to chiral-odd GPDs and the directly related tensor charge of the nucleon. In addition, the data is compared to an extension of a Regge formalism at high photon virtualities. It was found that the Regge model provides a better description at low Q2, while the GPD model is more appropriate at high Q2. | ||||
| Author(s) | Stefan Diehl, Andrey Kim, Kyungseon Joo, Patrick Achenbach, Zulkaida Akbar, Moskov Amaryan, Hamza Atac, Harut Avagyan, Carlos Ayerbe Gayoso, Lamya Baashen, Luca Barion, Mikhail Bashkanov, Marco Battaglieri, Ivan Bedlinskiy, Bruno Benkel Balbontin, Fatiha Benmokhtar, Andrea Bianconi, Angela Biselli, Mariangela Bondi, William Booth, Francesco Bossu, Sergey Boyarinov, Kai Brinkmann, Bill Briscoe, Stephen Bueltmann, Dilini Bulumulla, Volker Burkert, Daniel Carman, Andrea Celentano, Pierre Chatagnon, Vitaly Chesnokov, Taya Chetry, Giuseppe Ciullo, Geraint Clash, Phil Cole, Marco Contalbrigo, Giovanni Costantini, Annalisa D'Angelo, Natalya DASHYAN, Raffaella De Vita, Maxime Defurne, Alexandre Deur, Chaden Djalali, Raphael Dupre, Hovanes Egiyan, Mathieu Ehrhart, Ahmed El Alaoui, Lamiaa El Fassi, Latifa Elouadrhiri, Stuart Fegan, Alessandra Filippi, Gagik Gavalian, Yeranuhi Ghandilyan, Jerry Gilfoyle, Derek Glazier, Anna Rusova, Giulia Gosta, Ralf Gothe, Yuri Gotra, Keith Griffioen, Michel Guidal, Kawtar Hafidi, Hayk Hakobyan, Mohammad Hattawy, Timothy Hayward, David Heddle, Adam Hobart, Maurik Holtrop, Yordanka Ilieva, David Ireland, Evgeny Isupov, Hyon-Suk Jo, Mariana Khachatryan, Achyut Khanal, Wooyoung Kim, Aron Kripko, Valery Kubarovsky, Victoria Lagerquist, Jean-Marc Laget, Lucilla Lanza, Marco Leali, Sangbaek Lee, Paolo Lenisa, Xiaqing Li, Kenneth Livingston, Ian Macgregor, Dominique Marchand, Valerio Mascagna, Bryan McKinnon, Zein-Eddine Meziani, Stefano Migliorati, Taisiya Mineeva, Marco Mirazita, Viktor Mokeev, Esteban Molina, Rachel Montgomery, Carlos Munoz Camacho, Pawel Nadel-Turonski, Paul Naidoo, Krishna Neupane, Silvia Niccolai, Matthew Nicol, Gabriel Niculescu, Mikhail Osipenko, Mathieu Ouillon, Pushpa Pandey, Michael Paolone, Luciano Pappalardo, Rafayel Paremuzyan, Eugene Pasyuk, Sebouh Paul, William Phelps, Noemie Pilleux, Madhusudhan Pokhrel, Jiwan Poudel, J. Price, Yelena Prok, Trevor Reed, J. Richards, Marco Ripani, James Ritman, Patrizia Rossi, Franck Sabatie, Carlos Salgado, Susan Schadmand, Axel Schmidt, Youri Sharabian, Evgeny Shirokov, Utsav Shrestha, Paul Simmerling, Daria Sokhan, Nikos Sparveris, Marco Spreafico, Stepan Stepanyan, Igor Strakovsky, Steffen Strauch, Joshua Artem Tan, Nicholaus Trotta, Matteo Turisini, Richard Tyson, Maurizio Ungaro, Simone Vallarino, Luca Venturelli, Hakob Voskanyan, Eric Voutier, Daniel Watts, Xiangdong Wei, Scott Williams, Robert Wishart, Michael Wood, Nicholas Zachariou, Jixie Zhang, Zhiwen Zhao, Maria Zurek | ||||
| Publication Date | February 2023 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall B | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physics Letters B |
| Refereed | No |
| Volume | 839 |
| Issue | |
| Page(s) | 137761 |
Attachments/Datasets/DOI Link
| Document(s) |
Diehl_clas12_pip_gpd_paper (1).pdf
(STI Document)
1-s2.0-S0370269323000953-main.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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