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arXiv · 1407.8533

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

Chun Shen·Jean-Francois Paquet·Jia Liu·Gabriel Denicol·Ulrich Heinz·Charles Gale
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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 $v^γ_n$. 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.

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Chun Shen, Jean-Francois Paquet, Jia Liu, Gabriel Denicol, Ulrich Heinz, Charles Gale. 2014-07-31. Event-by-event direct photon anisotropic flow in relativistic heavy-ion collisions. https://doi.org/10.1016/j.nuclphysa.2014.08.030

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