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arXiv · 2001.11110

Electromagnetic radiation from the pre-equilibrium/pre-hydro stage of the quark-gluon plasma

Jessica Churchill·Li Yan·Sangyong Jeon·Charles Gale
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Abstract

Photons produced in the pre-equilibrium/pre-hydro stage of the quark-gluon plasma produced in relativistic heavy-ion collisions were computed using parton distribution functions obtained from solutions of the Boltzmann equation. The effect of the initial gluon momentum anisotropy $ξ$ and the dependence on the saturation momentum $Q_s$ was investigated. We see that small $Q_s$ results in a photon yield enhancement, whereas a larger $Q_s$ results in a pre-equilibrium photon suppression, owing to the strict constraint of matching to experimental energy density.

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Jessica Churchill, Li Yan, Sangyong Jeon, Charles Gale. 2020-01-29. Electromagnetic radiation from the pre-equilibrium/pre-hydro stage of the quark-gluon plasma. https://doi.org/10.1016/j.nuclphysa.2020.121946

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