Measurement of Virtual Compton Scattering Below Pion Threshold at Invariant Four-Momentum Transfer Squared Q²=1.(GEV/C)²

<p>Experimental Virtual Compton Scattering (VCS) off the proton is a new tool to access the Generalized Polarizabilities (GPs) of the proton that parameterize the response of the proton to an electromagnetic perturbation. The Q² dependence of the GPs leads, by Fourier transform, to a description of the rearrangement of the charge and magnetization distributions. The VCS reaction γ* + <em>p</em> → <em>p</em> + γ was experimentally accessed through the reaction <em>e</em> + <em>p</em> → <em>e</em> + <em>p</em> + γ of electroproduction of photons off a cryogenic liquid Hydrogen target. Data were collected in Hall A at Jefferson Lab between March and April 1998 below pion threshold at Q² = 1. and 1.9 (GeV/c)² and also in the resonance region. Both the scattered electron and the recoil proton were analyzed with the Hall A High Resolution Spectrometer pair while the signature of the emitted real photon is obtained with a missing mass technique. A few experimental and analysis aspects will be treated. Cross-sections were extracted from the data set taken at Q² = 1. (GeV/c)² and preliminary results for the structure functions <em>P_LL − P_TT</em>/∈; and <em>P_LT</em>, which involve the GPs, were obtained.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

2001

Author dc:creator

• Jutier, Christopher

Contributors dc:contributor

• Charles Hyde-Wright
• Bernard Michel
• Pierre-Yves Bertin
• Anatoly Radyushkin
• Charles Sukenik

• Electron scattering
• Pion
• Proton polarizabilites
• Virtual Compton scattering

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

9780493565125

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1105