Sigma(1385) Resonance Studies with STAR at sqrt{s_{NN}}=200 GeV

TL;DR

This paper reports measurements of the Sigma(1385) resonance in various collision systems at 200 GeV using the STAR detector, employing two mixing techniques to analyze invariant mass spectra and backgrounds.

Contribution

It introduces and compares two mixing techniques for measuring the Sigma(1385) resonance in different collision environments at RHIC.

Findings

Successful measurement of Sigma(1385) resonance in p+p, d+Au, and Au+Au collisions.

Comparison of invariant mass spectra and background estimation methods.

Validation of mixing techniques for resonance studies in high-energy collisions.

Abstract

In p+p, d+Au, and Au+Au collisions at \sqrt{s_{NN}}=200 GeV with the STAR detector at RHIC, \Sigma(1385)\to\Lambda+\pi were measured using two techniques; three-particle mixing and a hybrid mixing technique. We present results from both of these methods and compare the invariant mass spectra and the backgrounds.