Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-05-28
Phys.Scripta 61 (2000) 311-313
Physics
Nuclear Physics
Nuclear Theory
4 pages text and 2 figures
Scientific paper
10.1238/Physica.Regular.061a0031
We have analysed the direct photon data obtained by the WA80 collaboration in 200 A GeV S+Au collision at CERN SPS, in a one dimensional hydrodynamical model. Two scenario was considered: (i) formation of quark-gluon plasma and (ii) formation of hot hadronic gas. For both the scenario, ideal as well as extremely viscous fluid was considered. It was found that direct photon yield from QGP is not affected much whether the fluid is treated as ideal or extremely viscous. The yield however differ substantially if hadron gas is produced. Both the scenario do not give satisfactory description of the data.
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