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Qweak: First Direct Measurement of the Proton’s Weak Charge
Name
epjconf_conf2017_08005.pdf
Size
1.35 MB
Format
Adobe PDF
Checksum (MD5)
6a87cbb8e38226f27cf88c19831cf534
Author(s)
Balewski, Jan T.
Guo, Fang
Kowalski, Stanley B
Rajotte, Jean-Francois
Alternative Title
Q[subscript weak]: First Direct Measurement of the Proton’s Weak Charge
Date Issued
March 2017
Journal
EPJ Web of Conferences
Publisher
EDP Sciences
Citation
Androic, D. et al. “Q[subscript weak]: First Direct Measurement of the Proton’s Weak Charge.” Edited by Y. Foka, N. Brambilla, and V. Kovalenko. EPJ Web of Conferences 137 (2017): 08005 © 2017 The Authors
Version
Final published version
Abstract
The Q[subscript weak] experiment, which took data at Jefferson Lab in the period 2010 - 2012, will precisely determine the weak charge of the proton by measuring the parity-violating asymmetry in elastic e-p scattering at 1.1 GeV using a longitudinally polarized electron beam and a liquid hydrogen target at a low momentum transfer of Q² = 0.025 (GeV/c)². The weak charge of the proton is predicted by the Standard Model and any significant deviation would indicate physics beyond the Standard Model. The technical challenges and experimental apparatus for measuring the weak charge of the proton will be discussed, as well as the method of extracting the weak charge of the proton. The results from a small subset of the data, that has been published, will also be presented. Furthermore an update will be given of the current status of the data analysis.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1051/EPJCONF/201713708005
