STI Publications - View Publication Form #6739
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Publication Information
| Title | Parity Violation in Forward Angle Elastic Electron-Proton Scattering | ||||
| Abstract | We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton at Jefferson Laboratory. The kinematic point ({theta}_lab = 12.3 deg. and (Q^2) = 0.48 (GeV/c)^2) is chosen to provide sensitivity to the strange electric form factor G^s_E. A 3.36 GeV beam of longitudinally polarized electrons was scattered from protons in a liquid hydrogen target. The scattered flux was detected by a pair of spectrometers which focussed the elastically-scattered electrons onto total-absorption detectors. The detector signals were integrated and digitized by a custom data acquisition system. A feedback system reduced systematic errors by controlling helicity-correlated beam intensity differences at the sub-ppm (part per million) level. The experimental result, A = 14.5 +/- 2.0 (stat) +/- 1.1 (syst) ppm, is consistent with the electroweak Standard Model with no additional contributions from strange quarks. In particular, the measurement i | ||||
| Author(s) | Wilson Miller | ||||
| Publication Date | January 2001 | ||||
| Document Type | Thesis | ||||
| Primary Institution | Princeton University, Princeton, NJ | ||||
| Affiliation | / / | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | Yes | ||||
| Experiment Number(s) |
E91-010
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Thesis
| Thesis Type | PhD |
| Advisor | Institution |
| 1. Krishna Kumar | Princeton |
Attachments/Datasets/DOI Link
| Document(s) |
Thesis_Wilson.pdf
(STI Document)
|
| Dataset(s) | (none) |
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