The single-particle space-momentum angle distribution effect on two-pion HBT correlation with the Coulomb interaction

TL;DR

This paper investigates how the single-particle space-momentum angle distribution influences two-pion HBT correlations with Coulomb interaction, using a multiphase transport model to analyze radius dependencies and correlations.

Contribution

It introduces a detailed analysis of the Coulomb interaction's effect on HBT radii and the role of space-momentum angle distributions in two-pion correlations.

Findings

Coulomb interaction significantly affects HBT radius calculations.

The single-particle space-momentum angle correlates with the transverse momentum dependence of Rs.

HBT radii are sensitive to the presence or absence of space-momentum correlations.

Abstract

We calculate the HBT radius Rs for {\pi}+ particles with the Coulomb interaction by using the string melting version of a multiphase transport(AMPT) model. We study the relationship between the single-particle space-momentum angle and the particle sources and discuss HBT radii without single-particle space-momentum correlation. Additionally, we study the Coulomb interaction effect on the numerical connection between the single-particle space-momentum angle distribution and the transverse momentum dependence of Rs.