TITLE

A NEW SOLUTION TO THE HBT TIME-RELATED PUZZLE

AUTHOR(S)
QINGFENG LI; BLEICHER, MARCUS; STÖCKER, HORST
PUB. DATE
April 2009
SOURCE
Acta Physica Polonica B;2009, Vol. 40 Issue 4, p1217
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The UrQMD results of the HBT correlation of two-identical particles (pions, kaons, and Lambdas) at freeze-out in heavy ion collisions (HICs) from AGS to RHIC energies are shown. When the cascade mode is considered, the "lifetime" of the emission source is larger than the experimentally observed values at all investigated energies. After the mean-field potentials for both confined and "pre-formed" hadrons are considered, it is found that the inclusion of potential interactions pushes down the HBT RO and pulls up the RS so that the HBT time-related puzzle disappears and the HBT radii of pions and kaons and even those of Λs with large transversemomenta follow the mT-scaling fairly well. Furthermore, it is seen to reproduce the proper stopping power for net protons and to improve the elliptic flow at large transverse momenta.
ACCESSION #
42096956

 

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