STI Publications - View Publication Form #13726
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Publication Information
| Title | Measurements of the Neutron Longitudinal Spin Asymmetry A1n and Flavor Decomposition in the Valence Quark Region | ||||
| Abstract | The current data for the nucleon-virtual photon longitudinal spin asymmetry A1 on the proton and neutron have shown that the ratio of the polarized-to-unpolarized down-quarkparton distribution functions,Dd=d, tends towards -1/2 at large x, in disagreement with the perturbative QCD prediction that Dd/d approaches 1 but more in line with constituent quark models. As a part of experiment E06-014 in Hall A of Jefferson Lab, double-spin asymmetries were measured in the scattering of a longitudinally polarized electron beam of energies 4.74 and 5.89 GeV from a longitudinally and transversely polarized 3He target in the deep inelastic scattering and resonance region, allowing for the extraction of the neutron asymmetry An1 and the ratios Dd/d and Du/u. We will discuss our analysis of the data and present results for A1 and g1/F1 on both 3He and the neutron, and the resulting quark ratios for the up and down quarks in the kinematic range of 0.2<x<0.6 and 2<Q2<5 GeV^2 for our deep inelasti | ||||
| Author(s) | David Flay | ||||
| Publication Date | August 2014 | ||||
| Document Type | Thesis | ||||
| Primary Institution | Temple University, Philadelphia, PA | ||||
| 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) |
E06-014
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Thesis
| Thesis Type | PhD |
| Advisor | Institution |
| 1. Zein-Eddine Meziani | Temple |
Attachments/Datasets/DOI Link
| Document(s) |
dflay_thesis.pdf
(STI Document)
|
| Dataset(s) | (none) |
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