Rockefeller
Direct Photon Differential Cross Section in p̄p Collisions at the Square Root of s = 1.8 TeV
Abstract
dc:description.abstract<p>Data taken from the Collider Detector at Fermilab (CDF) during the 1992-1993 run are used to measure the cross section for production of isolated prompt photons in p̄p collisions at √s = 1.8 TeV. Prompt photon production in p̄p collisions is sensitive to the gluon structure function of the proton and therefore can provide a test of QCD. This measurement is a significant improvement over the 1989 measurement due to the addition of the Central Preradiator Chambers, the neural network hardware trigger upgrades, and the six times increase in integrated luminosity. Two different methods, conversion method and profile method, were used to separate prompt photons from photons produced by decay of hadrons. The profile method was used from 10-16 GeV P<sub>T</sub> and the conversion method at P<sub>T</sub> > 16 GeV. The cross section, measured as a function of transverse momentum, is in general agreement with next-to-leading order QCD predictions over five orders of magnitude but has a steeper slope at low P<sub>T</sub>.</p>
Degree
thesis:*- Name thesis:degree_name
- Doctor of Philosophy (PhD)
- Level thesis:degree_level
- Thesis
- Year
- 1996
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Maghakian, Arthur G
- Contributors dc:contributor
-
- Konstantin A. Goulianos
Subjects
dc:subject × 7Identifiers
dc:identifier.*- Repository record dc:identifier
- https://digitalcommons.rockefeller.edu/student_theses_and_dissertations/457
- OAI identifier oai:identifier
- oai:digitalcommons.rockefeller.edu:student_theses_and_dissertations-1461