Direct photon emission in Heavy Ion Collisions from Microscopic Transport Theory and Fluid Dynamics

Details Direct photon emission in Heavy Ion Collisions from Microscopic Transport Theory and Fluid Dynamics Direct photon emission in Heavy Ion Collisions from Microscopic Transport Theory and Fluid Dynamics

2010-03-29

arxiv.org/abs/1003.5454v1

PoS BORMIO2010:062,2010

Physics

Nuclear Physics

Nuclear Theory

6 pages, 3 figures. XLVIII International Winter Meeting on Nuclear Physics, BORMIO2010 January 25-29, 2010, Bormio, Italy

Scientific paper

Direct photon emission in heavy-ion collisions is calculated within a relativistic micro+macro hybrid model and compared to the microscopic transport model UrQMD. In the hybrid approach, the high-density part of the collision is calculated by an ideal 3+1-dimensional hydrodynamic calculation, while the early (pre-equilibrium-) and late (rescattering-) phase are calculated with the transport model. Different scenarios of the transition from the macroscopic description to the transport model description and their effects are studied. The calculations are compared to measurements by the WA98-collaboration and predictions for the future CBM-experiment are made.

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