The effect of single-particle space-momentum angle distribution on two-pion HBT correlation in relativistic heavy-ion collisions by using a multiphase transport model

TL;DR

This study uses a multiphase transport model to analyze how the space-momentum angle distribution of single pions affects two-pion HBT correlations in relativistic heavy-ion collisions, revealing a numerical link between these phenomena.

Contribution

It introduces a method to estimate single-pion transverse angle distribution from HBT analysis using a multiphase transport model.

Findings

Established a numerical connection between single-pion angle distribution and HBT radius $R_s$

Analyzed transverse momentum dependence of HBT radii at various collision energies

Proposed a way to infer pion angle distribution from HBT measurements

Abstract

With the string melting version of a multiphase transport(AMPT) model, we analyze the transverse momentum dependence of HBT radius $R_{\rm s}$ and the single-pion transverse angle distribution in central Au+Au collisions at $\sqrt{S_{NN}}=19.6, 27, 39, 62.4, 200$ GeV. And base on a series of functions, a numerical connection between these two phenomena has been built. We can estimate the single-pion transverse angle distribution from the HBT analysis.