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

Kód výsledku v IS VaVaI

RIV/61389005:_____/23:00578986 - isvavai.cz

Nalezeny alternativní kódy

RIV/68407700:21340/23:00370375

Výsledek na webu

https://doi.org/10.1016/j.physletb.2023.138165

DOI - Digital Object Identifier

10.1016/j.physletb.2023.138165

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

LM2018109: Brookhavenská národní laboratoř - účast České republiky

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

845

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

138165

Kód UT WoS článku

001094868100001

EID výsledku v databázi Scopus

2-s2.0-85171634196