STI Publications - View Publication Form #16306
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Publication Information
| Title | A Precision Measurement of the Beam-Normal Single-Spin Asymmetry in Forward-Angle Elastic Electron-Proton Scattering | ||||
| Abstract | A beam-normal single-spin asymmetry generated in the scattering of transversely polarized electrons from unpolarized nucleons is an observable related to the imaginary part of the two-photon exchange process. We report a 2% precision measurement of beam-normal single-spin asymmetry in elastic electron-proton scattering with a mean scattering angle of theta = 7.9 degrees and a mean energy of 1.149 GeV. The asymmetry result is Bn = -5.194 ± 0.067 (stat) ± 0.082 (syst) ppm. This is the most precise measurement of this quantity available to date and therefore provides a stringent test of two-photon exchange models at theta -> 0 degrees where they should be most reliable. | ||||
| Author(s) | Darko Androic  , Dave Armstrong , Arshak Asaturyan, Jan Balewski, John Bartlett, Joe Beaufait, Rakitha Beminiwattha , Jay Benesch, Fatiha Benmokhtar, James Birchall, Roger Carlini, Juan Carlos Cornejo, Silviu Covrig Dusa, Mark Macrae Dalton , C. Davis, Wouter Deconinck , Juergen Diefenbach, Jim Dowd, Jim Dunne, Dipangkar Dutta , Wade Duvall, Mostafa Elaasar, Willie Falk, Mike Finn, Tony Forest, Ciprian Gal, Dave Gaskell, Michael Gericke , Joe Grames , Val Gray, Klaus Grimm, Fang Guo, Joshua Hoskins , D. Jones, Mark Kevin Jones , R. Jones, M. Kargiantoulakis, Paul King , Elie Korkmaz , Stanley Kowalski, John Leacock, John Leckey, R. Lee, J. Lee, L. Lee, Scott MacEwan, Dave Mack, Joshua Magee , Rob Mahurin, Juliette Mammei , J. Martin, Martin McHugh, Dave Meekins, Jiawei Mei, Katherine Mesick, Robert Michaels , Anna Micherdzinska, Arthur Mkrtchyan, Hamlet MKRTCHYAN, Norman Morgan, Amrendra Narayan , L. Ndukum, V. Nelyubin, H. Nuhait, Nuruzzaman Nuruzzaman, Willem Van Oers, Victoria Owen, Shelley Page, Jinjin Pan, Kent Paschke , Sarah Phillips, Mark Pitt , Matthew Poelker, Robert Radloff, Jean-Francois Rajotte, Des Ramsay, Julie Roche , Brad Sawatzky , Tomislav Seva, Mitra Hashemi Shabestari , Rupesh Silwal, Neven Simicevic , Greg Smith , Patricia Solvignon-Slifer, Damon Spayde , Adesh Subedi, Ramesh Subedi, Riad Suleiman , Vardan Tadevosyan , Al Tobias , Vladas Tvaskis, Buddhini Waidyawansa , Peiqing Wang, Steven Wells, Stephen Wood , S. Yang, Ross Young, Peng Zang, Simon Zhamkochyan |
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| Publication Date | September 2020 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall C | ||||
| Funding Source | Nuclear Physics (NP), NSF, NSERC (Canada) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | Yes | ||||
| Experiment Number(s) |
E02-020
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review Letters |
| Refereed | Yes |
| Volume | 125 |
| Issue | |
| Page(s) | 112502 |
Attachments/Datasets/DOI Link
| Document(s) |
Qweak_LH2_transverse_Version1.pdf
(STI Document)
2006.12435.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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