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arXiv · 1404.3714

Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiation

Gojko Vujanovic·Jean-Francois Paquet·Gabriel S. Denicol·Matthew Luzum·Bjoern Schenke·Sangyong Jeon·Charles Gale
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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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Gojko Vujanovic, Jean-Francois Paquet, Gabriel S. Denicol, Matthew Luzum, Bjoern Schenke, Sangyong Jeon, Charles Gale. 2014-08-07. Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiation. https://doi.org/10.1016/j.nuclphysa.2014.08.053

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