Electromagnetic signals from Au+Au collisions at RHIC energy, $\sqrt{s_{NN}}$=200 GeV and Pb+Pb collisions at LHC energy, $\sqrt{s_{NN}}$=2.76 TeV

Abstract

We analyse the recently available experimental data on direct photon productions from Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV RHIC and from Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV LHC energies. The transverse momentum ($p_T$) distributions have been evaluated with the assumption of an initial quark gluon plasma phase at temperatures $T_i$=404 and 546 MeV with initial thermalisation times ${\tau }_i$=0.2 and 0.1 fm/c respectively for RHIC and LHC energies. The theoretical evalutions agree reasonably well with the experimental observations. The thermal window for the LHC energy is justified through the ratio of the $p_T$ spectra of thermal photons to dileptons.

7 pages, 8figures

References in corpus (8)

• The chiral and deconfinement aspects of the QCD transition
• Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Scale for the Phase Diagram of Quantum Chromodynamics
• NA60 results on thermal dimuons
• Evidence for radial flow of thermal dileptons in high-energy nuclear collisions
• Measuring initial temperature through photon to dilepton ratio in heavy ion collision
• Thermal photon to dilepton ratio in ultra-relativistic heavy ion collisions
• Hydrodynamical analysis of centrality dependence of charged particle's multiplicity in ${\sqrt{s}}_{NN}$=2.76 TeV Pb+Pb collisions

Cited by in corpus (4)

• Effect of magnetic field on the photon radiation from quark-gluon plasma in heavy ion collisions
• Study of freeze-out dynamics of strange hadrons
• Hydrodynamic description of direct photon spectra and elliptic flow in Pb+Pb collisions at LHC
• Photon production in Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV