Nuclear Theory/RIKEN Seminar

"What shines brighter, Glasma or Quark-Gluon Plasma?"

Presented by Naoto Tanji, University of Heidelberg

Friday, January 27, 2017, 2:00 pm — Small Seminar Room, Bldg. 510

Recent classical-statistical numerical simulations have established the "bottom-up" thermalization scenario of Baier et al. as the correct weak coupling effective theory for thermalization in ultrarelativistic heavy-ion collisions. I will talk on a parametric study of photon production in the various stages of this bottom-up framework to ascertain the relative contribution of the off-equilibrium "Glasma" relative to that of a thermalized Quark-Gluon Plasma. Taking into account the constraints imposed by the measured charged hadron multiplicities at RHIC and the LHC, we find that Glasma contributions are important especially for large values of the saturation scale at both energies. Furthermore, I will report on first kinetic simulations of photon production in the expanding Glasma that will quantify our estimates.

Hosted by: Heikki Mantysaari

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