2012/02/29 by ALICE Collaboration, B. Abelev, J. Adam +97 · 278 citations
Physics and Astronomy · #Charm (quantum number) #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quark #Rapidity #hep-ex #nucl-ex
paper · pdf · doi:10.1103/physrevlett.109.072301
published in Physical Review Letters 109(7), 072301 (American Physical Society) · 17 pages, 4 captioned figures, 2 tables, authors from page 12, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3078
openalex publication_date 2012/08/16 · openalex created_date 2016/06/24 · arxiv created 2017/04/15 · arxiv updated 2017/04/18 · openalex updated_date 2026/08/06
The ALICE experiment has measured the inclusive J/\ensuremathψ 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/\ensuremathψ 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\ifmmode±\else\textpm\fi0.032(stat)\ifmmode±\else\textpm\fi0.083(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/\ensuremathψ production from charm quarks in a deconfined partonic phase can describe our data.