Publications
Publication Information
| Title | Measurement of the Beam-Normal Single-Spin Asymmetry for Elastic Electron Scattering from 12C and 27Al |
| Authors | Darko Androic, David Armstrong, Arshak Asaturyan, Kurtis Bartlett, Joseph Beaufait, Rakitha Beminiwattha, Jay Benesch, Fatiha Benmokhtar, James Birchall, Roger Carlini, Michael Christy, Juan Cornejo, Silviu Covrig Dusa, Mark Dalton, Charles Davis, Wouter Deconinck, 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, Richard Jones, M. Kargiantoulakis, Paul King, Elie Korkmaz, Stanley Kowalski, John Leacock, John Leckey, Anna Lee, J. Lee, Lawrence Lee, Scott MacEwan, David Mack, Joshua Magee, Robert Mahurin, Juliette Mammei, Jeffery Martin, Martin McHugh, David Meekins, Jiawei Mei, Katherine Mesick, Robert Michaels, Anna Micherdzinska, Arthur Mkrtchyan, Hamlet Mkrtchyan, Norman Morgan, Amrendra Narayan, Luwani Ndukum, Vladimir Nelyubin, Nuruzzaman Nuruzzaman, Willem Van Oers, Shelley Page, Jie Pan, Kent Paschke, Sarah Phillips, Mark Pitt, 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, Siyuan Yang, Peng Zang, Simon Zhamkochyan |
| JLAB number | JLAB-PHY-21-3331 |
| LANL number | arXiv:2103.09758 |
| Other number | DOE/OR/23177-5144 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | DOE, NSF, NSERC |
|
Journal Compiled for Physical Review C Volume 104 Page(s) 014606 Refereed | |
| Publication Abstract: | We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries B_n on 12C and 27Al, obtained with an electron beam polarized transverse to its momentum direction. Although there are several previous measurements of this quantity on 12C, this is the first measurement made on 27Al. The experiment utilized the Qweak apparatus at Jefferson Lab with a beam energy of 1.158 GeV. The average lab scattering angle for both targets was 7.7 degrees, and the average Q^2 for both targets was 0.02437 GeV^2 (Q=0.1561 GeV). The asymmetries are B_n = -10.68 +- 0.90 (stat) +- 0.57 (syst) ppm for 12C and B_n = -12.16 +- 0.58 (stat) +- 0.62 (syst) ppm for 27Al. The results are found to be consistent with theoretical predictions, and are also compared to existing data. When scaled by Z/A, the Q-dependence of all the far-forward angle (theta < 10 degrees) data from 1$H to 27Al can be described by the same slope out to Q \approx 0.35 GeV. Larger-angle data from other experiments in the same Q range are consistent with a slope about twice as steep. |
| Experiment Numbers: | E02-020 |
| Group: | Hall C |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.104.014606 |
| Accepted Manuscript: | accepted_version_qweak_aluminum_transverse.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |