Measurements of pp,p\Lambda,p\Xi^- Correlation Functions at 3GeV Au+Au Collisions at RHIC-STAR

10 Nov 2023, 12:00
15m
Contributed Day 5 - Morning

Speaker

Zhi Qin (Tsinghua University)

Description

Two particle correlation function in heavy ion collisions mainly depends on the phase space of the emitting source, and the final-state interactions. So it is widely used to investigate the source size after collision, and also provide an effective experimental approach to study the nucleon-nucleon and hyperon-nucleon interactions, which are crucial to understand the inner structure of compact stars.

In this work, we will present the results of baryon correlation functions for the pairs of pp, pΛ, pΞ in Au+Au collisions atsNN=3 GeV recorded by the fixed target program at STAR. The correlation functions are obtained after corrections for purity and feed-down effects and considering momentum resolution, track merging and splitting effects. The source size rG of different pairs for different centrality and strong interaction parameters scattering length f0 and effective range d0 of the pairs are extracted. UrQMD and CRAB models are used to calculate the correlation function theoretically to compare with the experimental result.

Primary author

Zhi Qin (Tsinghua University)

Co-author

STAR Collaboration

Presentation materials