arXiv:nucl-th/0404047·v3·Nuclear Theory
Pion Interferometry for Hydrodynamical Expanding Source with a Finite Baryon Density
W. N. Zhang (1 and 2)🇨🇳 · M. J. Efaaf (1)🇨🇳 · Cheuk-Yin Wong (2 and 3)🇺🇸 · M. Khaliliasr (1) ((1) Harbin Institute of Technology, Harbin, P.R.China, (2) Oak Ridge National Laboratory, Oak Ridge, U.S.A., (3) University of Tennessee, Knoxville, U.S.A.)🇨🇳
Abstract
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.
Comments: 4 pages, 2 figures