Double Spin Asymmetry in d →(e→e'p)n

<p>Using the CLAS detector at Jefferson Lab, double spin asymmetries (A ∥) for quasi-elastic electron scattering off the deuteron have been measured at several beam energies. The data were collected during the EG1 experiment, which scattered longitudinally polarized electrons with energies from 1.6 to 5.8 GeV off a longitudinally polarized cryogenic ND₃ target. The double spin asymmetries were measured as a function of photon virtuality <em>Q</em>^<em>2</em> (0.13-3.17 (GeV/c)2), missing momentum (0.0-0.5 GeV/c), and the angle between the (inferred) "spectator" neutron and the momentum transfer direction (θ_ng). The results from EG1b are compared with a recent model that includes final state interactions using a complete parameterization of nucleon-nucleon scattering as well as a simplified model using the plane wave impulse approximation. From this comparison, it is concluded that the inclusion of final-state interactions are needed at high missing momenta, while the PWIA description works rather well at lower missing momenta. The asymmetry changes sign as a function of the missing momentum, as expected within PWIA from the presence of a <em>D-</em>state component in the deuteron wavefunction.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

2013

Author dc:creator

• Mayer, Michael

Contributors dc:contributor

• Sebastian Kuhn
• J. Wallace Van Orden
• Stephen Bueltmann
• Desmond Cook
• D. Glenn Lasseigne

• Deuteron
• Double spin asymmetry
• Electron scattering
• Momentum
• Polarized electrons
• 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

9781303166235

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1064