Two-pion and two-kaon femtoscopic correlations in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV from STAR

TL;DR

This paper reports on femtoscopic correlation measurements of pion and kaon pairs in 200 GeV Au+Au collisions at RHIC, revealing insights into the spatial and temporal characteristics of the particle emission source at freeze-out.

Contribution

It provides the first detailed analysis of two-pion and two-kaon femtoscopic correlations at this energy, including their dependence on collision centrality and transverse momentum.

Findings

Measured three-dimensional radii ($R_{out}$, $R_{side}$, $R_{long}$) for pion and kaon pairs.

Analyzed the dependence of femtoscopic radii on collision centrality and transverse momentum.

Enhanced understanding of the space-time evolution of the particle emission source in heavy-ion collisions.

Abstract

Measurement of femtoscopic correlations in heavy-ion collisions can provide information about spatial and temporal parameters of the particle emission region at kinetic freeze-out. In this work we present the measurement of two-pion and two-kaon femtoscopic correlations in 200 GeV Au+Au collisions at RHIC. The collision centrality and transverse momentum dependence of the three-dimensional radii, $R_{out}$, $R_{side}$ and $R_{long}$ is discussed.