Naslov
J/ψ Suppression at Forward Rapidity in Pb-Pb Collisions at √sNN=2.76 TeV

Autori
Abelev, B. ; ... ; Antičić, Tome ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Šuša, Tatjana ; ... ; Vicković, Linda ; ... ; Zynovyev, M.

Izvornik
Physical Review Letters (0031-9007) 109 (2012), 7; 072301-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ALICE; LHC; CERN; strange particle; pp; 2.76 TeV; J/Psi; Production

Sažetak
The ALICE experiment has measured the inclusive J/ψ production in Pb-Pb collisions at √sNN=2.76  TeV 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
The ALICE Collaboration

POVEZANOST RADA