Inclusive, prompt and non-prompt J/psi production at mid-rapidity in Pb-Pb collisions at root S-NN=2.76 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00446863" target="_blank" >RIV/68378271:_____/15:00446863 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/15:00446863 RIV/68407700:21340/15:00236962

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP07(2015)051" target="_blank" >http://dx.doi.org/10.1007/JHEP07(2015)051</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2015)051" target="_blank" >10.1007/JHEP07(2015)051</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Inclusive, prompt and non-prompt J/psi production at mid-rapidity in Pb-Pb collisions at root S-NN=2.76 TeV

Popis výsledku v původním jazyce

The transverse momentum (p(T)) dependence of the nuclear modification factor R-AA and the centrality dependence of the average transverse momentum <p(T)> for inclusive J/psi have been measured with ALICE for Pb-Pb collisions at root S-NN = 2.76TeV in thee(+)e(-) decay channel at mid-rapidity (vertical bar y vertical bar < 0.8). The <p(T)> is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of RAA is observed towards low p(T). These observations might be indicative of a sizable contribution of charm quark coalescence to the J/psi production. Additionally, the fraction of non-prompt J/psi from beauty hadron decays, f(B), has been determined in the region 1.5 < p(T) < 10 GeV/c in three centrality intervals. No significant centrality dependence of fB is observed. Finally, the RAA of non-prompt J/psi is discussed and compared with model predictions. The nuclear modification in the region 4.5 < p(T) < 10 GeV/c is foun

Název v anglickém jazyce

Inclusive, prompt and non-prompt J/psi production at mid-rapidity in Pb-Pb collisions at root S-NN=2.76 TeV

Popis výsledku anglicky

The transverse momentum (p(T)) dependence of the nuclear modification factor R-AA and the centrality dependence of the average transverse momentum <p(T)> for inclusive J/psi have been measured with ALICE for Pb-Pb collisions at root S-NN = 2.76TeV in thee(+)e(-) decay channel at mid-rapidity (vertical bar y vertical bar < 0.8). The <p(T)> is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of RAA is observed towards low p(T). These observations might be indicative of a sizable contribution of charm quark coalescence to the J/psi production. Additionally, the fraction of non-prompt J/psi from beauty hadron decays, f(B), has been determined in the region 1.5 < p(T) < 10 GeV/c in three centrality intervals. No significant centrality dependence of fB is observed. Finally, the RAA of non-prompt J/psi is discussed and compared with model predictions. The nuclear modification in the region 4.5 < p(T) < 10 GeV/c is foun

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

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2015

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

32

Strana od-do

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Kód UT WoS článku

000357931400001

EID výsledku v databázi Scopus

2-s2.0-84938834279