High Energy Measurements of the Dueteron Photodisintegration Differential Cross Section

New measurements of the high energy deutron photodisintegration differential cross section were made at the Thomas Jefferson National Accelerator Facility in Newport News, Virginia. Two experiments were performed. Experiment E96-003 was performed in experimental Hall C. The measurements were designed to extend the highest energy differential cross section values to 5.5 GeV incident photon energy at forward angles. This builds upon previous high energy measurements in which scaling consistent with the pQCD constituent counting rules was observed at 90° and 70° in the center of mass. From the new measurements, a threshold for the onset of constituent counting rule scaling seems present at transverse momentum approximately 1.3 GeV/c. The second experiment, E99_008, was performed in experimental Hall A. The measurements were designed to explore the angular distribution of the differential cross section at constant energy. The measurements were made symmetric about 90° in the center of mass. The results, which are neither consistent with meson exchange nor quark-exchange, remain puzzling.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2012

Author dc:creator

• Schulte, Elaine Carol

Contributors dc:contributor

• Holt, R.J.
• Beck, Douglas H.

• deutron photodisintegration
• high energy measurements
• Thomas Jefferson National Accelerator Facility

Statement dc:rights

• ©2002 Schulte

Language dc:language

en

Identifier

Q. 539.7232 Tc2s
FILM 2002 Sch817

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/31376