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Photons from Nucleus-Nucleus Collisions at Ultra-Relativistic Energies

Jan-e Alam·T. Hatsuda·Tapan K. Nayak·Pradip Roy·Sourav Sarkar·Bikash Sinha
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Abstract

We compare the photon emission rates from hot hadronic matter with in-medium mass shift and Quark Gluon Plasma (QGP). It is observed that the WA98 data can be well reproduced by hadronic initial state with initial temperature $\sim 200$ MeV if the universal scaling of temperature dependent hadronic masses are assumed and the evolution of temperature with time is taken from transport model or (3+1) dimensional hydrodynamics. The data can also be reproduced by QGP initial state with similar initial temperature and non-zero initial radial velocity.

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Jan-e Alam, T. Hatsuda, Tapan K. Nayak, Pradip Roy, Sourav Sarkar, Bikash Sinha. 2001-08-09. Photons from Nucleus-Nucleus Collisions at Ultra-Relativistic Energies. https://doi.org/10.1063/1.1469983

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