Suppression of psi(2S) production in p-Pb collisions at root s(NN)=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00440761" target="_blank" >RIV/68378271:_____/14:00440761 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/14:00440761

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP12(2014)073" target="_blank" >http://dx.doi.org/10.1007/JHEP12(2014)073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP12(2014)073" target="_blank" >10.1007/JHEP12(2014)073</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Suppression of psi(2S) production in p-Pb collisions at root s(NN)=5.02 TeV

Popis výsledku v původním jazyce

Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state psi(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 < ycms< 3.53) and backward (−4.46 < ycms< −2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/psi), by showing the ratios between the production cross sections, as well as the double ratios between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the psi(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on psi(2S) production

Název v anglickém jazyce

Suppression of psi(2S) production in p-Pb collisions at root s(NN)=5.02 TeV

Popis výsledku anglicky

Abstract: The ALICE Collaboration has studied the inclusive production of the charmonium state psi(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy (formula presented.) = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 < ycms< 3.53) and backward (−4.46 < ycms< −2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J/psi), by showing the ratios between the production cross sections, as well as the double ratios between p-Pb and proton-proton collisions. Finally, the nuclear modification factor for inclusive ψ(2S) is evaluated and compared to the measurement of the same quantity for J/ψ and to theoretical models including parton shadowing and coherent energy loss mechanisms. The results show a significantly larger suppression of the psi(2S) compared to that measured for J/ψ and to models. These observations represent a clear indication for sizeable final state effects on psi(2S) production

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LG13031" target="_blank" >LG13031: Spolupráce ČR s CERN</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1126-6708

e-ISSN

—

Svazek periodika

2014

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

25

Strana od-do

073

Kód UT WoS článku

000346243600002

EID výsledku v databázi Scopus

2-s2.0-84918578120