Publications
Publication Information
| Title | A Precision Measurement of the Beam-Normal Single-Spin Asymmetry in Forward-Angle Elastic Electron-Proton Scattering |
| Authors | Darko Androic, David Armstrong, Arshak Asaturyan, Jan Balewski, John Bartlett, Joseph Beaufait, Rakitha Beminiwattha, Jay Benesch, Fatiha Benmokhtar, James Birchall, Roger Carlini, Juan Cornejo, Silviu Covrig Dusa, Mark Dalton, C. Davis, Wouter Deconinck, Juergen Diefenbach, James Dowd, James Dunne, Dipangkar Dutta, Wade Duvall, Mostafa Elaasar, Willie Falk, John Finn, Tony Forest, Ciprian Gal, David Gaskell, Michael Gericke, Joseph Grames, Valerie Gray, Klaus Grimm, Fang Guo, Joshua Hoskins, D. Jones, Mark Jones, R. Jones, M. Kargiantoulakis, Paul King, Elie Korkmaz, Stanley Kowalski, John Leacock, John Leckey, A. Lee, J. Lee, L. Lee, Scott MacEwan, David Mack, Joshua Magee, Robert Mahurin, Juliette Mammei, J. Martin, Martin McHugh, David 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, Bernard Poelker, Robert Radloff, Jean-Francois Rajotte, William Ramsay, Julie Roche, Bradley Sawatzky, Tomislav Seva, Mitra Hashemi Shabestari, Rupesh Silwal, Neven Simicevic, Gregory Smith, Patricia Solvignon-Slifer, Damon Spayde, Adesh Subedi, Ramesh Subedi, Riad Suleiman, Vardan Tadevosyan, William Tobias, Vladas Tvaskis, Buddhini Waidyawansa, Peiqing Wang, Steven Wells, Stephen Wood, S. Yang, Ross Young, Peng Zang, Simon Zhamkochyan |
| JLAB number | JLAB-PHY-20-3202 |
| LANL number | arXiv:2006.12435 |
| Other number | DOE/OR/23177-4980 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | NSF, NSERC (Canada) |
|
Journal Compiled for Physical Review Letters Volume 125 Page(s) 112502 Refereed | |
| Publication 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. |
| Experiment Numbers: | E02-020 |
| Group: | Hall C |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevLett.125.112502 |
| Accepted Manuscript: | 2006.12435.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |