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Energy loss in high energy heavy ion collisions from the Hydro+Jet model

Tetsufumi Hirano·Yasushi Nara
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Abstract

We investigate the effect of energy loss of jets in high energy heavy ion collisions by using a full three-dimensional space-time evolution of a fluid combined with (mini-)jets that are explicitly evolved in space-time. In order to fit the pi^0 data for the Au+Au collisions at sqrt(s_{NN}) = 130 GeV, the space-time averaged energy loss dE/dx(tau <= 3 fm/c) = 0.36 GeV/fm is extracted within the model. It is found that most energy loss occurs at the very early time less than 2 fm/c in the QGP phase and that energy loss in the mixed phase is negligible within our parameterization for jet energy loss. This is a consequence of strong expansion of the system.

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Tetsufumi Hirano, Yasushi Nara. 2002-09-19. Energy loss in high energy heavy ion collisions from the Hydro+Jet model. https://doi.org/10.1103/physrevc.66.041901

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