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

• Verfasst von: Abdulhamid, Muhammad Ibrahim [VerfasserIn]
• Verfasst von: Deppner, Ingo Martin [VerfasserIn]
• Verfasst von: Herrmann, Norbert [VerfasserIn]
• Verfasst von: Leung, Yue [VerfasserIn]
• Verfasst von: Söhngen, Yannick [VerfasserIn]
• Verfasst von: Weidenkaff, Philipp [VerfasserIn]
• Titel: Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC
• Verf.angabe: The STAR Collaboration
• E-Jahr: 2023
• Jahr: 10 October 2023
• Umfang: 9 S.
• Illustrationen: Illustrationen
• Fussnoten: Online verfügbar 4 September 2023, Version des Artikels 18 September 2023 ; The STAR Collaboration: M.I. Abdulhamid, I.M. Deppner, N. Herrmann, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff [und viele weitere] ; Gesehen am 03.06.2024
• Titel Quelle: Enthalten in: Physics letters
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2023
• Band/Heft Quelle: 845(2023) vom: Okt., Artikel-ID 138165, Seite 1-9
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2023.138165
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1890457167

Abstract

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 sNN = 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 sNN = 27 GeV. The physics implications on the QCD phase structure are discussed.