Hard Thermal Photon Production in Relativistic Heavy Ion Collisions

Details Hard Thermal Photon Production in Relativistic Heavy Ion Collisions Hard Thermal Photon Production in Relativistic Heavy Ion Collisions

2001-03-04

arxiv.org/abs/hep-ph/0103044v3

Phys.Lett.B510:98-106,2001; Erratum-ibid.B660:604-606,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages with 8 figures. v3: Erratum to [Phys. Lett. B 510 (2001) 98] with correctly labeled Figs. 2, 4, and 5 added

Scientific paper

10.1016/S0370-2693(01)00525-1 10

The recent status of hard thermal photon production in relativistic heavy ion collisions is reviewed and the current rates are presented with emphasis on corrected bremsstrahlung processes in the quark-gluon plasma (QGP) and quark-hadron duality. Employing Bjorken hydrodynamics with an EOS supporting the phase transition from QGP to hot hadron gas (HHG), thermal photon spectra are computed. For SPS 158 GeV Pb+Pb collisions, comparison with other theoretical results and the WA98 direct photon data indicates significant contributions due to prompt photons. Extrapolating the presented approach to RHIC and LHC experiments, predictions of the thermal photon spectrum show a QGP outshining the HHG in the high-pT-region.

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