Boundary and expansion effects on two-pion correlation functions in relativistic heavy-ion collisions

Details Boundary and expansion effects on two-pion correlation functions in relativistic heavy-ion collisions Boundary and expansion effects on two-pion correlation functions in relativistic heavy-ion collisions

2001-01-10

arxiv.org/abs/nucl-th/0101020v2

Phys.Rev. C63 (2001) 064901

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 Eps figures, uses RevTeX and epsfig

Scientific paper

10.1103/PhysRevC.63.064901

We examine the effects that a confining boundary together with hydrodynamical expansion play on two-pion distributions in relativistic heavy-ion collisions. We show that the effects arise from the introduction of further correlations due both to collective motion and the system's finite size. As is well known, the former leads to a reduction in the apparent source radius with increasing average pair momentum K. However, for small K, the presence of the boundary leads to a decrease of the apparent source radius with decreasing K. These two competing effects produce a maximum for the effective source radius as a function of K.

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