Transport model analysis of the transverse momentum and rapidity dependence of pion interferometry at SPS energies

Details Transport model analysis of the transverse momentum and rapidity dependence of pion interferometry at SPS energies Transport model analysis of the transverse momentum and rapidity dependence of pion interferometry at SPS energies

2006-12-07

arxiv.org/abs/nucl-th/0612030v1

J.Phys.G33:537-548,2007

Physics

Nuclear Physics

Nuclear Theory

17 pages, 11 figures

Scientific paper

10.1088/0954-3899/34/3/012

Based on the UrQMD transport model, the transverse momentum and the rapidity dependence of the Hanbury-Brown-Twiss (HBT) radii $R_L$, $R_O$, $R_S$ as well as the cross term $R_{OL}$ at SPS energies are investigated and compared with the experimental NA49 and CERES data. The rapidity dependence of the $R_L$, $R_O$, $R_S$ is weak while the $R_{OL}$ is significantly increased at large rapidities and small transverse momenta. The HBT "life-time" issue (the phenomenon that the calculated $\sqrt{R_O^{2}-R_S^{2}}$ value is larger than the correspondingly extracted experimental data) is also present at SPS energies.

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