System Size and Energy Dependence of Near-side Di-hadron Correlation

Kód výsledku v IS VaVaI

RIV/68407700:21340/12:00188892 - isvavai.cz

Výsledek na webu

http://arxiv.org/pdf/1110.5800v1.pdf

DOI - Digital Object Identifier

10.1103/PhysRevC.85.014903

Jazyk výsledku

angličtina

Název v původním jazyce

System Size and Energy Dependence of Near-side Di-hadron Correlation

Popis výsledku v původním jazyce

Two-particle azimuthal (??) and pseudorapidity (??) correlations usingroot a trigger particle with large transverse momentum (pT ) in d+Au, Cu+Cu and Au+Au collisions at sNN = 62.4 GeV and 200 GeV from the STAR experiment at RHIC are presented. The near-side correlation is separated into a jet-like component, narrow in both ?? and ??, and the ridge, narrow in ?? but broad in ??. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated pT . The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlatroot ion is found to increase with the system size. The ridge, previously observed in Au+Au collisions at sN N = 200 GeV, is also found in Cu+Cu collisions and in collisions at root sNN = 62.4 GeV, but is found to be substantially smaller at root sNN =62.4GeV than at root sNN2= 200 GeV

Název v anglickém jazyce

System Size and Energy Dependence of Near-side Di-hadron Correlation

Popis výsledku anglicky

Two-particle azimuthal (??) and pseudorapidity (??) correlations usingroot a trigger particle with large transverse momentum (pT ) in d+Au, Cu+Cu and Au+Au collisions at sNN = 62.4 GeV and 200 GeV from the STAR experiment at RHIC are presented. The near-side correlation is separated into a jet-like component, narrow in both ?? and ??, and the ridge, narrow in ?? but broad in ??. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated pT . The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlatroot ion is found to increase with the system size. The ridge, previously observed in Au+Au collisions at sN N = 200 GeV, is also found in Cu+Cu collisions and in collisions at root sNN = 62.4 GeV, but is found to be substantially smaller at root sNN =62.4GeV than at root sNN2= 200 GeV

Druh

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

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

LA09013: Účast ČR v experimentu STAR v laboratoři BNL, USA

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Physical Review C

ISSN

0556-2813

e-ISSN

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Svazek periodika

85

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

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Kód UT WoS článku

000298924800003

EID výsledku v databázi Scopus

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