Event-by-event direct photon anisotropic flow in relativistic heavy-ion collisions

Abstract

We consider directly emitted and hadronic decay photons from event-by-event hydrodynamic simulations. We compute the direct photon anisotropic flow coefficients and compare with recent experimental measurements. We find that it is crucial to include the photon multiplicity as a weighting factor in the definition of $v_n^{\gamma }$. We also investigate the sensitivity of the direct photon spectrum and elliptic flow to the theoretical uncertainty of the photon emission rate in the quark-hadron transition region and to the pre-equilibrium dynamics of relativistic heavy-ion collisions.

arXiv comment4 pages, 3 figures, proceedings of the XXIV Quark Matter conference, May 19-24 2014, Darmstadt (Germany)

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• Parametric estimate of the relative photon yields from the Glasma and the Quark-Gluon Plasma in heavy-ion collisions
• Thermal photon radiation in high multiplicity p+Pb collisions at the Large Hadron Collider
• Holographic Photon Production in Heavy Ion Collisions
• The iEBE-VISHNU code package for relativistic heavy-ion collisions
• Phenomenology of photon and di-lepton production in relativistic nuclear collisions
• Recent developments in the theory of electromagnetic probes in relativistic heavy-ion collisions
• Effect of an electromagnetic field on the spectra and elliptic flow of particles
• Electromagnetic Radiation from QCD Matter: Theory Overview