A unique large thermal source of real and virtual photons in the reactions Pb(158 AGeV) + Pb, Au

Abstract

The data of direct single-photon measurements of the WA98 collaboration in the reaction Pb(158 AGeV) + Pb are analyzed within a thermal model with a minimum number of parameters adjusted to the dilepton data obtained by the CERES and NA50 collaborations in the reactions Pb(158 AGeV) + Au, Pb. The agreement of our model with the WA98 data points to a unique large thermal source emitting electromagnetic radiation observable in both the real and virtual photon channels.

11 pages including figures

Cited by in corpus (22)

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• Direct Photons from Relativistic Heavy-Ion Collisions
• Direct real photons in relativistic heavy ion collisions
• Suppression of high transverse momentum hadrons at RHIC by (pre-) hadronic final state interactions
• Photons from Pb-Pb Collisions at CERN SPS
• Radiation of single photons from $Pb+Pb$ collisions at the CERN SPS and quark hadron phase transition
• Photon emission in heavy ion collisions at the CERN SPS
• Dileptons and Photons from Coarse-Grained Microscopic Dynamics and Hydrodynamics Compared to Experimental Data
• Centrality Dependence of Thermal Parameters in Heavy-Ion Collisions at CERN-SPS
• Thermal Radiation from Au + Au Collisions at \sqrt{s} = 200 GEV/A Energy
• A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
• Nuclear Broadening Effects on Hard Prompt Photons at Relativistic Energies
• Inclusive pion and eta production in p+Nb collisions at 3.5 GeV beam energy
• Hard Photon production from unsaturated quark gluon plasma at two loop level
• Radial Flow from Electromagnetic Probes and Signal of Quark Gluon Plasma
• Spectral Red-Shift Versus Broadening from Photon and Dilepton Spectra
• Thermal photon to dilepton ratio in ultra-relativistic heavy ion collisions
• Thermal Parameters in Heavy Ion Collisions at SPS and RHIC: Centrality Dependence
• Single photons from Pb+Pb collisions at CERN SPS, QGP vs. hadronic gas
• $\omega -\pi {\gamma }^{\ast }$ transition form factor in proton-proton collisions
• In-medium effects on electromagnetic probes
• Dependence of energy loss of jets on the initial thermodynamic state of deconfined matter at RHIC