Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00237246" target="_blank" >RIV/68407700:21340/15:00237246 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/15:00444575

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physletb.2015.04.033" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2015.04.033</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2015.04.033" target="_blank" >10.1016/j.physletb.2015.04.033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

Popis výsledku v původním jazyce

A data-driven method was applied to Au+Au collisions at root S-NN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Delta eta-dependent and Delta eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Delta eta-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of. within the measured range of pseudorapidity vertical bar eta vertical bar < 1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34% +/- 2%(stat.) +/- 3%(sys.) for particles with transverse momentum p(T) less than 2 GeV/c. The Delta eta-dependent part, attributed to nonflow correlations,is found to be 5% +/- 2%(sys.) relative to the flow of the measured second harmonic cumulant at vertical bar Delta eta vertical bar > 0.7

Název v anglickém jazyce

Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

Popis výsledku anglicky

A data-driven method was applied to Au+Au collisions at root S-NN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Delta eta-dependent and Delta eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Delta eta-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of. within the measured range of pseudorapidity vertical bar eta vertical bar < 1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34% +/- 2%(stat.) +/- 3%(sys.) for particles with transverse momentum p(T) less than 2 GeV/c. The Delta eta-dependent part, attributed to nonflow correlations,is found to be 5% +/- 2%(sys.) relative to the flow of the measured second harmonic cumulant at vertical bar Delta eta vertical bar > 0.7

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

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

—

Svazek periodika

745

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

40-47

Kód UT WoS článku

000353892300005

EID výsledku v databázi Scopus

2-s2.0-84928320877