STI Publications - View Publication Form #12436
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Publication Information
| Title | Early Results from the Qweak Experiment | ||||
| Abstract | A subset of results from the recently completed Jefferson Lab Qweak experiment are reported. This experiment, sensitive to physics beyond the Standard Model, exploits the small parity-violating asymmetry in elastic ep scattering to provide the first determination of the protons weak charge Qweak(p). The experiment employed a 180 uA longitudinally polarized 1.16 GeV electron beam on a 35 cm long liquid hydrogen target. Scattered electrons corresponding to Q2 of 0.025 GeV2 were detected in eight Cerenkov detectors arrayed symmetrically around the beam axis. The goals of the experiment were to provide a measure of Qweak(p) to 4.2 percent (combined statistical and systematic error), which implies a measure of sin2(thetaw) at the level of 0.3 percent, and to help constrain the vector weak quark charges C1u and C1d. The experimental method is described, with particular focus on the challenges associated with the worlds highest power LH2 target. The new constraints on C1u and C1d provided by | ||||
| Author(s) | Greg Smith, Darko Androic, Dave Armstrong, Arshak Asaturyan, Todd Averett, Jan Balewski, Joe Beaufait, Rakitha Beminiwattha, Jay Benesch, Fatiha Benmokhtar, James Birchall, Roger Carlini, Gordon Cates, Juan Carlos Cornejo, Silviu Covrig Dusa, Mark Macrae Dalton, Charles Davis, Wouter Deconinck, Juergen Diefenbach, Jim Dowd, Jim Dunne, Dipangkar Dutta, Wade Duvall, Mostafa Elaasar, Willie Falk, Mike Finn, Tony Forest, Dave Gaskell, Michael Gericke, Joe Grames, Val Gray, Klaus Grimm, Fang Guo, Joshua Hoskins, Kathleen Johnston, Donald Jones, Mark Kevin Jones, Richard Jones, Emmanouil Kargiantoulakis, Paul King, Elie Korkmaz, Stanley Kowalski, John Leacock, John Leckey, Anna Lee, Jeong Han Lee, Larry Lee, Scott MacEwan, Dave Mack, Joshua Magee, Rob Mahurin, Juliette Mammei, Jeff Martin, Martin McHugh, Dave Meekins, Jiawei Mei, Robert Michaels, Anna Micherdzinska, Arthur Mkrtchyan, Hamlet Mkrtchyan, Norman Morgan, Katherine Mesick, Amrendra Narayan, Luwani Ndukum, Vladimir Nelyubin, Nuruzzaman Nuruzzaman, Willem Van Oers, Allena Opper, Shelley Page, Jie Pan, Kent Paschke, Sarah Phillips, Mark Pitt, Matthew Poelker, Jean-Francois Rajotte, Des Ramsay, Julie Roche, Brad Sawatzky, Tomislav Seva, Mitra Hashemi Shabestari, Rupesh Silwal, Neven Simicevic, 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, Siyuan Yang, Ross Young, Simon Zhamkochyan | ||||
| Publication Date | March 2014 | ||||
| Document Type | Meeting, Proceedings | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall C | ||||
| Funding Source | |||||
| 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 |
Meeting / Conference
| Meeting Name | INPC 2013 |
| Meeting Date | 6/2/2013 |
| Document Subtype | Contributed Talk |
Proceedings
| Title | Proceedings of INPC 2013 |
| Editor(s) | S. Lunardi, P.G. Bizzeti, Sonia Kabana, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini and J.J. Valiente-Dobo |
| Publisher | EPJ Web of Conferences Journal |
| Refereed | Yes |
| Page Number | 05002 |
| Year | 2014 |
Attachments/Datasets/DOI Link
| Document(s) |
1311.6437v1.pdf
(STI Document)
|
| DOI Link | |
| Dataset(s) | (none) |
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