Publications
Publication Information
| Title | Determination of the Proton’s Weak Charge and its Constraints on the Standard Model |
| Authors | Roger Carlini, Willem Van Oers, Mark Pitt, Gregory Smith |
| JLAB number | JLAB-PHY-19-2822 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4621 |
| 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 Annu. Rev. Nucl. Part. Sci. Volume 69 Refereed | |
| Publication Abstract: | This article discusses some of the history of parity-violation experiments that culminated in the Qweak experiment, which provided the first determination of the proton's weak charge QpW. The guiding principles necessary to the success of that experiment are outlined, followed by a brief description of the Qweak experiment. Several consistent methods used to determine QpW from the asymmetry measured in the Qweak experiment are explained in detail. The weak-mixing angle sin2 ?w determined from QpW is compared to results from other experiments. A description of the procedure for using the QpW result on the proton to set TeV-scale limits for new parity-violating semi-leptonic physics beyond the standard model (BSM) is presented. By also considering atomic parity-violation results on cesium, it is shown how this result can be generalized to set limits on BSM physics which couples to any combination of valence-quark flavors. Finally, the discovery space available to future weak charge measurements is explored. |
| Experiment Numbers: | E02-020 |
| Group: | Hall C |
| Document: | |
| DOI: | |
| Accepted Manuscript: | |
| Supporting Documents: | |
| Supporting Datasets: | |