Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-02-19
J.Phys.G29:2151-2168,2003
Physics
Nuclear Physics
Nuclear Theory
24 pages, in Latex
Scientific paper
10.1088/0954-3899/29/9/310
We study the effects of a collective flow and multiple scattering on two-particle correlation measurements in Hanbury-Brown-Twiss intensity interferometry. We find that under a collective flow the effective source distribution in a two-particle correlation measurement depends on the initial source distribution. In addition, it depends on a collective flow phase function which consists of terms that tend to cancel each other. As the detected particles traverse from the source point to the freeze-out point, they are subject to multiple scattering with medium particles. We examine the effects of multiple scattering on HBT correlations. By using the Glauber theory of multiple scattering at high energies and the optical model at intermediate energies, we find that multiple scattering leads to an absorption and an effective density distribution that depends on the initial source distribution.
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