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 | ||||
| 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)
|
| DOI Link | |
| Dataset(s) | (none) |
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