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Probing Proton Spin Structure: A Measurement of - at Four-Momnentum Transfer of 2 to 6 GeV2

Maxwell, James Davis
Format
Thesis/Dissertation; Online
Author
Maxwell, James Davis
Advisor
Norum, Blaine
Day, Donal
Abstract
The Spin Asymmetries of the Nucleon Experiment investigated the spin structure of the proton via inclusive electron scattering at the Continuous Electron Beam Accelerator Facility at Jefferson Laboratory in Newport News, VA. A double–polarization measurement of polarized asymmetries was performed using the University of Virginia solid polarized ammonia target with target polarization aligned longitudinal and near transverse to the electron beam, allowing the extraction of the spin asymmetries A 1 and A 2 , and spin structure functions g 1 and g 2 . Polarized electrons of energies of 4.7 and 5.9 GeV were scattered to be viewed by a novel, non-magnetic array of detectors observing a four-momentum transfer range of 2 to 6 GeV 2 . This document addresses the extraction of the spin asymmetries and spin structure functions, with a focus on spin structure function g 2 , which we have measured as a function of x and W in four Q 2 bins. Note: Abstract extracted from PDF text
Language
English
Published
University of Virginia, Department of Physics, PHD, 2011
Published Date
2011-12-01
Degree
PHD
Collection
Libra ETD Repository
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