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arXiv · 1008.2332

Direct photon calculations in heavy-ion collisions at s(NN)**1/2 = 62.4 - 200 AGeV in a (3+1) dimensional hybrid approach

Bjoern Baeuchle·Marcus Bleicher
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Abstract

Direct photon spectra from central Au+Au- and Cu+Cu-collisions at sqrt(s_NN) = 62.4, 130 and 200 AGeV are calculated within the microscopic transport model UrQMD and a micro+macro hybrid model. In the latter approach, the high-density part of the transport evolution is replaced by an ideal 3+1-dimensional hydrodynamic calculation. We study the impact of viscosity and full local thermalization and compare the calculations to measurements obtained by the PHENIX collaboration. We find a reasonable agreement with the experimental data for calculations involving a Quark-Gluon-Plasma phase.

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Bjoern Baeuchle, Marcus Bleicher. 2010-08-13. Direct photon calculations in heavy-ion collisions at s(NN)**1/2 = 62.4 - 200 AGeV in a (3+1) dimensional hybrid approach. https://doi.org/10.1103/physrevc.82.064901

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