Thermal photon production in high-energy nuclear collisions

We use a boost-invariant one-dimensional (cylindrically symmetric) fluid dynamics code to calculate thermal photon production in the central rapidity region of S+Au and Pb+Pb collisions at SPS energy ([radical][ital s] =20 GeV/nucleon). We assume that the hot matter is in thermal equilibrium through...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 1995-03, Vol.51 (3), p.1460-1464
Main Authors: Neumann, JJ, Seibert, D, Fai, G
Format: Article
Language:English
Subjects:
662340 - Hadron Interactions- (1992-)
663300 - Nuclear Reactions & Scattering, General- (1992-)
663450 - Heavy-Ion-Induced Reactions & Scattering- (1992-)
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
EQUILIBRIUM
GLUONS
GOLD 197 TARGET
HEAVY ION REACTIONS
LEAD 206 REACTIONS
LEAD 207 TARGET
MASSLESS PARTICLES
MATTER
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEAR REACTIONS
ONE-DIMENSIONAL CALCULATIONS
PARTICLE PRODUCTION
PHASE TRANSFORMATIONS
PHOTONS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POSTULATED PARTICLES
QUARK MATTER
SULFUR 32 REACTIONS
TARGETS
THERMAL EQUILIBRIUM
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Summary:We use a boost-invariant one-dimensional (cylindrically symmetric) fluid dynamics code to calculate thermal photon production in the central rapidity region of S+Au and Pb+Pb collisions at SPS energy ([radical][ital s] =20 GeV/nucleon). We assume that the hot matter is in thermal equilibrium throughout the expansion, but consider deviations from chemical equilibrium in the high temperature (deconfined) phase. We use equations of state with a first-order phase transition between a massless pion gas and quark gluon plasma, with transition temperatures in the range 150[le][ital T][sub [ital c]][le]200 MeV.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.51.1460