Pion freeze-out through HBT correlation in HICs from AGS/FAIR to RHIC energies

Details Pion freeze-out through HBT correlation in HICs from AGS/FAIR to RHIC energies Pion freeze-out through HBT correlation in HICs from AGS/FAIR to RHIC energies

2007-08-20

arxiv.org/abs/0708.2613v1

PoSCPOD07:048,2007

Physics

Nuclear Physics

Nuclear Theory

10 pages, 6 figs. For PoS CPOD2007, July 9-13, GSI,Germany

Scientific paper

In this talk we present the results of two-pion HBT correlation at freeze-out in heavy ion collisions (HICs) from AGS to RHIC energies. The UrQMD hadron-string transport model as well as the CRAB analyzing program are adopted. Based on the cascade mode, in general, the calculations are satisfying and well in line with the experimental data although discrepancies are not negligible. Such as: I), the HBT time-related puzzle exists at all energies. II), at low AGS energies, the calculated volume as well as the mean free path of pion source at freeze-out are lower than data. It implies that a better description of interactions of particles at early stage of HICs is required.

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