Pion-Xi correlations in Au-Au collisions at STAR
Petr Chaloupka (for the STAR Collaboration)
TL;DR
This paper reports the first observation of Xi*(1530) resonance signals in Au-Au collisions at RHIC, analyzing pion-Xi correlations to understand particle interactions and collective expansion effects.
Contribution
It presents the first detection of Xi*(1530) resonance in Au-Au collisions and compares experimental results with theoretical models of collective expansion.
Findings
Xi* resonance signal observed for the first time in Au-Au collisions
Correlation function peak matches predictions assuming collective expansion
Experimental data aligns with theoretical models of particle emission
Abstract
We present pion-Xi correlation analysis in Au-Au collisions at sqrt(s_NN)= 200 GeV and sqrt(s_NN) = 62.4 GeV, performed using the STAR detector at RHIC. A Xi*(1530) resonance signal is observed for the first time in Au-Au collisions. Experimental data are compared with theoretical predictions. The strength of the Xi* peak is reproduced in the correlation function assuming that pions and Xis emerge from a system in collective expansion.
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