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Physics 2014
Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiationDOI: 10.1016/j.nuclphysa.2014.08.053 Abstract: Using 3+1D viscous relativistic fluid dynamics, we show that electromagnetic probes are sensitive to the initial conditions and to the out-of-equilibrium features of relativistic heavy-ion collisions. Within the same approach, we find that hadronic observables show a much lesser sensitivity to these aspects. We conclude that electromagnetic observables allow access to dynamical regions that are beyond the reach of soft hadronic probes.
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