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Longevity of the quark-gluon plasma and the mixed phase from intensity interferometry of high energy photons

Dinesh K. Srivastava·Charles Gale
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Abstract

Two-photon intensity interferometry is shown to provide an accurate measurement of lifetime of quark-gluon plasma created in ultra-relativistic heavy ion collisions via the difference of outward and sidewardcorrelation radii. Under the assumption of a longitudinal, boost invariant expansion of the plasma, we obtain analytical expressions for the correlations from the quark-gluon plasma phase. A $3+1$ dimensional expansion of the plasma along with a first order phase transition to hadrons is next considered, and, leads to a source with two characteristic lifetimes, one for the quark-gluon plasma phase, and the other for the longer lived mixed phase. This may even help us to {\em experimentally} determine the order of the phase transition.

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Dinesh K. Srivastava, Charles Gale. 1993-11-10. Longevity of the quark-gluon plasma and the mixed phase from intensity interferometry of high energy photons. https://doi.org/10.1016/0370-2693(93)91742-6

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