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

0578986 - ÚJF 2024 RIV NL eng J - Journal Article
Abdulhamid, M. I. - Aboona, B. E. - Adam, J. - Adamczyk, L. - Bielčík, J. - Bielčíková, Jana - Češka, J. - Das, A. - Holub, L. - Chaloupka, P. - Kosarzewski, L. K. - Líčeník, Robert - Lomnický, O. - Prozorova, V. - Robotková, Monika - Šumbera, Michal … Total 383 authors
Energy dependence of intermittency for charged hadrons in Au plus Au collisions at RHIC.
Physics Letters. B. Roč. 845, OCT (2023), č. článku 138165. ISSN 0370-2693. E-ISSN 1873-2445
Research Infrastructure: BNL-CZ III - 90234
Institutional support: RVO:61389005
Keywords : STAR collaboration * heavy ion experiments
OECD category: Nuclear physics
Impact factor: 4.3, year: 2022
Method of publishing: Open access
https://doi.org/10.1016/j.physletb.2023.138165

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 root 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 (v) from peripheral to central collisions. The v is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the v in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around root s(NN) = 27 GeV. The physics implications on the QCD phase structure are discussed.
Permanent Link: https://hdl.handle.net/11104/0347872