Production of high P/sub T/ photons in proton-beryllium collisions
Thesis/Dissertation
·
OSTI ID:5484264
Hadronic ..pi../sup 0/ and direct photon production was measured in a large acceptance liquid argon calorimeter using a 300 GeV/c proton beam incident on a beryllium target. ..pi../sup 0/ and single ..gamma.. cross sections were obtained. Monte Carlo backgrounds to the single ..gamma.. signal were calculated for ..pi../sup 0/ and eta/sup 0/ decay sources with their normalization based on the number of ..pi../sup 0/'s and eta/sup 0/'s observed. After single ..gamma.. background subtraction, the ratio of cross sections, ..gamma../..pi../sup 0/, was found to increase steadily from 0.05 at p/sub t/ = 2.0 GeV/c to values approaching one at p/sub t/ = 6.0 GeV/c, indicating a significant increase in direct ..gamma.. relative to ..pi../sup 0/ production in this range.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA)
- OSTI ID:
- 5484264
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH METALS
BARYON REACTIONS
BERYLLIUM
BOSONS
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ETA MESONS
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRONS
INFORMATION
MASSLESS PARTICLES
MESONS
METALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PHOTONS
PIONS
PIONS NEUTRAL
PROTON REACTIONS
PSEUDOSCALAR MESONS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH METALS
BARYON REACTIONS
BERYLLIUM
BOSONS
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ETA MESONS
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRONS
INFORMATION
MASSLESS PARTICLES
MESONS
METALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PHOTONS
PIONS
PIONS NEUTRAL
PROTON REACTIONS
PSEUDOSCALAR MESONS