Spin Structure of the Deuteron

<p>Double spin asymmetries for the proton and the deuteron have been measured in the EG1b experiment using the CLAS detector at Jefferson Lab. Longitudinally polarized electrons at energies 1.6, 2.5, 4.2 and 5.7 GeV were scattered from longitudinally polarized NH3 and ND3 targets. The double spin asymmetry A|| for the proton and the deuteron has been extracted from these data as a function of <em>W</em> and <em>Q</em>² with unprecedented precision. The virtual photon asymmetry <em>A</em>₁ and the spin structure function <em>g</em>1 can be calculated from these measurements by using parametrization to the world data for the virtual photon asymmetry <em>A</em> 2 and the unpolarized structure functions <em>F</em>₁ and R. The large kinematic coverage of the experiment (0.05 GeV² < Q² < 5.0 GeV² and 1.08 GeV < <em>W</em> < 3.0 GeV) helps us to better understand the spin structure of the nucleon, especially in the transition region between hadronic and quark-gluon degrees of freedom. The results on <em>A</em>1,<em>g</em>1 and the first moment_{Γ 1/1} as well as the higher moments_{Γ 3/1} and _Γ5/1, using the entire data set for the deuteron, are presented in this thesis. The moments are compared to theoretical and phenomenological calculations. In addition, parameterizations of the world data on the asymmetries and the spin structure functions are studied to create and refine the models on these quantities that can be used in various applications. Finally, the neutron asymmetries are extracted from the combined proton and deuteron data and the preliminary results are demonstrated.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

2009

Author dc:creator

• Guler, Nevzat

Contributors dc:contributor

• Sebastian E. Kuhn
• Gail E. Dodge
• Ian Balitsky
• Charles I. Sukenik
• John Adam

• Deuteron
• Nucleons
• Spin asymmetries
• Elementary Particles and Fields and String Theory
• Nuclear

Statement dc:rights

• <p>In Copyright. URI: <a href="http://rightsstatements.org/vocab/InC/1.0/">http://rightsstatements.org/vocab/InC/1.0/</a> This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).</p>

Identifier

9781109719932

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1049