Pion Interferometry for Hydrodynamical Expanding Source with a Finite Baryon Density

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2004,（10）
• 页码范围: 1918-1921
• 页数: 4页
• 语种: 英文

摘要

We calculate the two-pion correlation function for an expanding hadron source with a finite baryon density. The space-time evolution of the source is described by relativistic hydrodynamics and the Hanbury-Brown-Twiss (HBT) radius is extracted after effects of collective expansion and multiple scattering on the HBT interferometry have been taken into account, using quantum probability amplitudes in a path-integral formalism. We find that this radius is substantially smaller than the HBT radius extracted from the freeze-out configuration.