The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN=2.76TeV down to zero transverse momentum in the rapidity range 2.5<y<4. A suppression of the inclusive J/ψ yield in Pb-Pb is observed with respect to the one measured in pp collisions scaled by the number of binary nucleon-nucleon collisions. The nuclear modification factor, integrated over the 0%-80% most central collisions, is 0.545±0.032(stat)±0.083(syst) and does not exhibit a significant dependence on the collision centrality. These features appear significantly different from measurements at lower collision energies. Models including J/ψ production from charm quarks in a deconfined partonic phase can describe our data. © 2012 CERN.

J/ψ suppression at forward rapidity in Pb-Pb collisions at √sNN=2.76TeV

BRUNO, GIUSEPPE EUGENIO;CARMINATI, FLAVIO;COSTA, FIAMMETTA;DAS, KESHABANANDA;DI BARI, DEBORAH;FERRETTI, ANDREA;MULLER, HEIKO;PERINI, DAVIDE;ROY, PARTHA PRATIM;SANTORO, ROMUALDO;SEGATO, GINO;TOIA, ALESSIO;
2012

Abstract

The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN=2.76TeV down to zero transverse momentum in the rapidity range 2.5
http://oai.aps.org/filefetch?identifier=10.1103/PhysRevLett.109.072301&component=fulltext&description=markup&format=xml
Physics and Astronomy (all)
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/2062305
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 5
  • Scopus 235
  • ???jsp.display-item.citation.isi??? 204
social impact