STI Publications - View Publication Form #18627
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Publication Information
| Title | Measurement of the helicity asymmetry E for gamma p -> p pi^0 reaction in the resonance region | ||||
| Abstract | The double-spin-polarization observable E for E for gamma p -> p pi^0 has been measured with the CEBAF Large Acceptance Spectrometer (CLAS) at photon beam energies E_g from 0.367 to 2.173 GeV (corresponding to center-of-mass energies from 1.240 to 2.200 GeV) for pion center-of-mass angles, cos(theta^c.m._pi0), between -0.86 and 0.82. These new CLAS measurements cover a broader energy range and have smaller uncertainties compared to previous CBELSA data and provide an important indepen?83 dent check on systematics. These measurements are compared to predictions as well as new global fits from The George Washington University, Mainz, and Bonn-Gatchina groups. Their inclusion in multipole analyses will refine our understanding of the single-pion production contribution to the Gerasimov-Drell-Hearn sum rule and improve the determination of resonance properties. | ||||
| Author(s) | C. Kim, Nicholas Zachariou, Mikhail Bashkanov, Wilbert Briscoe, Stuart Fegan, V. Kashevarov, K. Nikonov, Andrey Sarantsev, Axel Schmidt, Igor Strakovsky, Daniel Watts, R. L. Workman, Patrick Achenbach, Zulkaida Akbar, Artur Amaryan, G. Angelini, W. Armstrong, Hamza Atac, Lamya Baashen, Nathan Baltzell, Luca Barion, Marco Battaglieri, Ivan Bedlinskiy, Bruno Benkel Balbontin, Fatiha Benmokhtar, Nawal Benmouna, Andrea Bianconi, Angela Biselli, W. A. Booth, Francesco Bossu, S. Boiarinov, K. T. Brinkmann, J. Brock, Dilini Bulumulla, Volker Burkert, T. Cao, Chris Carlin, Daniel Carman, Jose Carvajal, Pierre Chatagnon, Vitaly Chesnokov, Taya Chetry, Giuseppe Ciullo, Geraint Clash, P. Cole, Marco Contalbrigo, Olga Cortes Becerra, Giovanni Costantini, Volker Crede, A. D’Angelo, Natalya Dashyan, Raffaella De Vita, Maxime Defurne, Alexandre Deur, S. Diehl, Chaden Djalali, Michael Dugger, Gagik Gavalian, Jerry Gilfoyle, Anna Rusova, Giulia Gosta, R. W. Gothe, Keith Griffioen, Kawtar Hafidi, Hayk Hakobyan, Mohammad Hattawy, Florian Hauenstein, T. Hayward, David Heddle, Adam Hobart, Maurik Holtrop, Yordanka Ilieva, I. Illari, David Ireland, Evgeny Isupov, Hideko Iwamoto, D. Jenkins, H. Jo, R. Johnston, K. Joo, Sylvester Joosten, Tsuneo Kageya, C. D. Keith, D. Keller, Achyut Khanal, Kim Alston, W. Kim, F. Klein, Alex Klimenko, Aron Kripko, Valery Kubarovsky, Lucilla Lanza, Marco Leali, S. Lee, X. Li, K. Livingston, Ian Macgregor, Claude Marchand, Valerio Mascagna, Bryan McKinnon, Stefano Migliorati, Richard Milner, Taisiya Mineeva, Viktor Mokeev, Carlos Munoz Camacho, Pawel Nadel-Turonski, Krishna Neupane, Silvia Niccolai, Mikhail Osipenko, Alexander Ostrovidov, P. Pandey, Michael Paolone, Luciano Pappalardo, Rafayel Paremuzyan, Eugene Pasyuk, S. Paul, Noemie Pilleux, Himal Pokhrel, Deewakar Poudel, J. Price, Yelena Prok, Antonio Radic, Niveditha Ramasubramanian, S. Ratlif, T. Reed, J. Richards, Marco Ripani, B. Ritchie, James Ritman, G. Rosner, Carlos Salgado, Susan Schadmand, Diane Schott, R. Schumacher, M. B. C Scott, M. L. Seely, Erin Seroka, Evgeny Shirokov, U. Shrestha, Daria Sokhan, Nikos Sparveris, Marco Spreafico, Steffen Strauch, J. Tan, R. Tyson, Annie Ungaro, Simone Vallarino, Luca Venturelli, Hakob Voskanyan, Eric Voutier, X. Wei, Scott Williams, R. Wishart, M. H. Wood, Mikhail Yurov, J. Zhang, M. Zurek | ||||
| Publication Date | September 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 | European Physical Journal A |
| Refereed | No |
| Volume | 59 |
| Issue | |
| Page(s) | 217 |
Attachments/Datasets/DOI Link
| Document(s) |
Measurement_of_the_helicity_asymmetry_E_for_the (4).pdf
(STI Document)
s10050-023-01123-3.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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