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

Abstract

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.

6 pages, 5 Eps figures, uses RevTeX and epsfig

References in corpus (5)

• Measurement of Pion Enhancement at Low Transverse Momentum and of the Delta-Resonance Abundance in Si-Nucleus Collisions at AGS Energy
• Boundary and Coulomb Effects on Boson Systems in High-Energy Heavy-Ion Collisions
• Density and Boundary Effects on Pion Distributions in Relativistic Heavy--Ion Collisions
• Density and expansion effects on pion spectra in relativistic heavy-ion collisions
• Small size boundary effects on two-pion interferometry

Cited by in corpus (4)

• Q-boson interferometry and generalized Wigner function
• Proton and pion transverse spectra at RHIC from radial flow and finite size effects
• Finite size effects on pion spectra in relativistic heavy-ion collisions
• Finite volume and magnetic field effects on the two-pion correlation function in relativistic heavy-ion collisions