Photon emission from very high energy nuclear collisions

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.3182· OSTI ID:6277443

Nadeau, H ^[1]

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1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

The number of high transverse momentum photons emitted by a free-streaming quark-gluon plasma created in a collision between heavy nuclei at energies reached at the CERN SPS, BNL RHIC, or CERN LHC is computed assuming a production-time momentum distribution that is exponential. A comparison to a hydrodynamically expanding plasma with the same initial conditions indicates that the photon yield is relatively insensitive to parton rescattering. The expected background coming from the decay of neutral pions is also computed and compared to the direct yield. Direct photons generally dominate decay photons for transverse momenta greater than 5 GeV.

• DOE Contract Number: FG02-87ER40328
• OSTI ID: 6277443
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:7; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
662340 -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARGED-PARTICLE REACTIONS
DECAY
ELEMENTARY PARTICLES
EMISSION
FIELD THEORIES
HADRONS
HEAVY ION REACTIONS
LATTICE FIELD THEORY
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESONS
NUCLEAR REACTIONS
PARTICLE DECAY
PARTICLE MODELS
PARTONS
PHOTON EMISSION
PIONS
PIONS NEUTRAL
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
TRANSVERSE MOMENTUM
UNIFIED GAUGE MODELS