Interferometrical signature of mixed phase in A+A collisions |
| |
Authors: | Yu M Sinyukov V A Averchenkov B Lörstad |
| |
Institution: | 1. Institute of Theoretical Physics, SU-252130, Kiev, USSR 2. Department of Particle Physics, Lund University, S-22362, Lund, Sweden
|
| |
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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|