Abstract
We have calculated the pion rapidity distribution, the transversal momentum spectrum and the pion correlator in outward, sideward and longitudinal directions for S+S collisions at high energy. We used a two-temperature model that allows us to explain the abundance of pions at smallp T and highp T . The first source, which is at high temperature, is in a quark-gluon-hadron mixed phase radiating pions due to a deflagration shock wave on the background of longitudinal expansion. The second source consists of the unburnt part of the matter in hadronic phase. The interferometrical analysis at differentp T gives a signature for two expanding sources separated in time and allows the measurement of the lifetime and other parameters of each of them.
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Sinyukov, Y.M., Averchenkov, V.A. & Lörstad, B. Interferometrical signature of mixed phase in A+A collisions. Z. Phys. C - Particles and Fields 49, 417–422 (1991). https://doi.org/10.1007/BF01549694
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DOI: https://doi.org/10.1007/BF01549694