Publications
Publication Information
| Title | First measurement of hard exclusive pi-Delta++ electroproduction beam-spin asymmetries off the proton |
| Authors | Stefan Diehl, Nicholaus Trotta, Kyungseon Joo, Patrick Achenbach, Zulkaida Akbar, Whitney Armstrong, Hamza Atac, Harutyun Avagyan, Lamya Baashen, Nathan Baltzell, Luca Barion, Mikhail Bashkanov, Marco Battaglieri, Ivan Bedlinskiy, Fatiha Benmokhtar, Andrea Bianconi, Angela Biselli, Francesco Bossu, Kai-Thomas Brinkmann, William Briscoe, Dilini Bulumulla, Richard Capobianco, Daniel Carman, Jose Carvajal, Andrea Celentano, Gabriel Charles, Pierre Chatagnon, Vitaly Chesnokov, GIUSEPPE CIULLO, Philip Cole, Marco Contalbrigo, Giovanni Costantini, Volker Crede, Annalisa D'Angelo, Natalya Dashyan, Raffaella De Vita, Alexandre Deur, Chaden Djalali, Raphael Dupre, Mathieu Ehrhart, Ahmed El Alaoui, Lamiaa El Fassi, Stuart Fegan, Alessandra Filippi, Gagik Gavalian, Derek Glazier, Anna Golubenko, Giulia Gosta, Ralf Gothe, Yuri Gotra, Keith Griffioen, Kawtar Hafidi, Hayk Hakobyan, Mohammad Hattawy, Timothy Hayward, David Heddle, Adam Hobart, Maurik Holtrop, Izzy Illari, David Ireland, Evgeny Isupov, Hyon-Suk Jo, Robert Johnston, Dustin Keller, Mariana Khachatryan, Achyut Khanal, Andrey Kim, Wooyoung Kim, Valerii Klimenko, Aron Kripko, Valery Kubarovsky, Sebastian Kuhn, Victoria Lagerquist, Lucilla Lanza, Marco Leali, Sangbaek Lee, Paolo Lenisa, Xiaqing Li, Ian MacGregor, Dominique Marchand, Valerio Mascagna, Bryan McKinnon, Christopher McLauchlin, Zein-Eddine Meziani, Stefano Migliorati, Richard Milner, Taisiya Mineeva, Marco Mirazita, Viktor Mokeev, Patrick Moran, Carlos Munoz Camacho, Paul Naidoo, Krishna Neupane, Silvia Niccolai, Gabriel Niculescu, Mikhail Osipenko, Pushpa Pandey, Michael Paolone, Luciano Pappalardo, Rafayel Paremuzyan, Sebouh Paul, William Phelps, Noémie Pilleux, MADHUSUDHAN Pokhrel, Jiwan Poudel, John Price, Yelena Prok, Antonio Radic, Brian Raue, Trevor Reed, Jared Richards, Marco Ripani, James Ritman, Patrizia Rossi, Franck Sabatie, Carlos Salgado, Susan Schadmand, Axel Schmidt, Youri Sharabian, Utsav Shrestha, Daria Sokhan, Nikolaos Sparveris, Marco Spreafico, Stepan Stepanyan, Igor Strakovsky, Steffen Strauch, Matteo Turisini, Richard Tyson, Maurizio Ungaro, Simone Vallarino, Luca Venturelli, Hakob Voskanyan, Eric Voutier, Xiangdong Wei, R. Williams, Robert Wishart, Michael Wood, Mikhail Yurov, Nicholas Zachariou, Zhiwen Zhao, Maria Zurek |
| JLAB number | JLAB-PHY-23-3777 |
| LANL number | (None) |
| Other number | DOE/OR/23177-5785 |
| 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 131 Page(s) 021901 Refereed | |
| Publication Abstract: | The polarized cross section ratio sigma_LT'/signma_0 from hard exclusive pi-Delta++ electroproduction off an unpolarized hydrogen target has been extracted based on beam-spin asymmetry measurements using a 10.2 GeV / 10.6 GeV incident electron beam and the CLAS12 spectrometer at Jefferson Lab. The study, which provides the first observation of this channel in the deep-inelastic regime, focuses on very forward-pion kinematics in the valence regime, and photon virtualities ranging from 1.5 GeV^2 up to 7 GeV2^. The reaction provides a novel access to the d-quark content of the nucleon and to p-> Delta++ transition generalized parton distributions. A comparison to existing results for hard exclusive pi+n and pi0p electroproduction is provided, which shows a clear impact of the excitation mechanism, encoded in transition generalized parton distributions, on the asymmetry. |
| Experiment Numbers: | |
| Group: | Hall B |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevLett.131.021901 |
| Accepted Manuscript: | PhysRevLett.131.021901.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |