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Publication Information
Title | Elastic Scattering of Longitudinally Polarized Electrons from 4^He | ||||
Abstract | We have performed the first measurement of the parity-violating asymmetry in the elastic scattering of longitudinally polarized electrons from ^4He. The kinematics chosen (Q^2 = 0.1 (GeV/c)^2) provide a direct sensitivity to the strange electric form factor G^s_E with negligible contributions from competing effects. This experiment was performed in June 2004 and July-September 2005 in Hall A at Jefferson Lab. This work represents the experimental setup and analysis of the 2004 dataset. The final statistical precision, from the combined datasets, put stringent requirements on the systematic errors that normalize the asymmetry (e.g. Q^2, beam polarization, backgrounds). The experimental and analysis techniques, presented in this thesis, resulted in a 12.9% relative measure of the parity-violating asymmetry for the 2004 dataset, and a 4.1% relative measure for the 2005 dataset (the most precise measurement of a parity-violating asymmetry ever obtained). The 2004 measured result, A^{ | ||||
Author(s) | Bryan Moffit | ||||
Publication Date | May 2007 | ||||
Document Type | Thesis | ||||
Primary Institution | The College of William and Mary, Williamsburg, VA | ||||
Affiliation | Exp Nuclear Physics / Experimental Halls / Hall A | ||||
Funding Source | |||||
Proprietary? | No | ||||
This publication conveys | Technical Science Results | ||||
Document Numbers |
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Associated with an experiment | Yes | ||||
Experiment Number(s) |
E00-114
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Associated with EIC | No | ||||
Supported by Jefferson Lab LDRD Funding | No |
Thesis
Thesis Type | PhD |
Advisor | Institution |
1. David S. Armstrong | College of William and Mary |
Attachments/Datasets/DOI Link
Document(s) |
Moffit_Thesis.pdf
(STI Document)
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Dataset(s) | (none) |
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