L\'evy femtoscopy with PHENIX at RHIC
Mate Csanad (for the PHENIX Collaboration)
TL;DR
This paper measures charged pion correlations in high-energy gold collisions, using Le9vy source models to analyze the data and explore the physical implications of the parameters involved.
Contribution
It introduces the use of Le9vy-shaped source distributions to describe femtoscopic correlation functions in heavy-ion collisions.
Findings
Le9vy models fit the data well
Identified a new scaling variable in the parameters
Analyzed the transverse mass dependence of parameters
Abstract
In this paper we present the measurement of charged pion two-particle femtoscopic correlation functions in 200 GeV Au+Au collisions, in 31 average transverse mass bins, separately for positive and negative pion pairs. L\'evy-shaped source distributions yield a statistically acceptable description of the measured correlation functions, with three physical parameters: correlation strength parameter lambda, L\'evy index alpha and L\'evy scale parameter R. The transverse mass dependence of these L\'evy parameters is then investigated and their physical interpretation is also discussed, and the appearance of a new scaling variable is observed.
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