Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC

The STAR Collaboration

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at s NN = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the ν in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around s NN = 27 GeV. The physics implications on the QCD phase structure are discussed.

原文English
文章編號138165
期刊Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
845
DOIs
出版狀態Published - 2023 10月 10

All Science Journal Classification (ASJC) codes

  • 核能與高能物理

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