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Title A 3% Measurement of the Beam Normal Single Spin Asymmetry in Forward Angle Elastic Electron-Proton Scattering using the Qweak Setup
Abstract The beam normal single spin asymmetry generated in the scattering of transversely polarized electrons from unpolarized nucleons is an observable of the imaginary part of the two-photon exchange process. Moreover, it is a potential source of false asymmetry in parity violating electron scattering experiments. The Qweak experiment uses parity violating electron scattering to make a direct measurement of the weak charge of the proton. The targeted 4% measurement of the weak charge of the proton probes for parity violating new physics beyond the Standard Model. The beam normal single spin asymmetry at Qweak kinematics is at least three orders of magnitude larger than 5 ppb precision of the parity violating asymmetry. To better understand this parity conserving background, the Qweak Collaboration has performed elastic scattering measurements with fully transversely polarized electron beam on the proton and aluminum. This dissertation presents the analysis of the 3% measurement (1.3%
Author(s) Dinayadura Buddhini Waidyawansa
Publication Date August 2013
Document Type Thesis
Primary Institution Ohio University, Athens, OH
Affiliation Exp Nuclear Physics / Experimental Halls / Hall C
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-PHY-13-1772 OSTI Number: 1091891
LANL Number: Other Number: DOE/OR/23177-2714
Associated with an experiment Yes
Experiment Number(s)
E08-016
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Thesis
Thesis Type PhD
Advisor Institution
1. Julie Roche Ohio University
Attachments/Datasets/DOI Link
Document(s)
Dataset(s) (none)
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