Journal
PHYSICS LETTERS B
Volume 734, Issue -, Pages 314-327Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2014.05.064
Keywords
Relativistic heavy ion collisions; Quark gluon plasma; Quarkonium; J/Psi suppression; Experimental results
Funding
- Grid centres
- Worldwide LHC Computing Grid (WLCG) Collaboration
- State Committee of Science
- World Federation of Scientists (WFS)
- Swiss Fonds Kidagan, Armenia
- Conselho Nacional de Desenvolvimento Cient fico e Tecnol gico (CNPq)
- Financiadora de Estudos e Projetos (FINEP)
- Fundacao de Amparo Pesquisa do Estado de Sao Paulo (FAPESP)
- National Natural Science Foundation of China (NSFC)
- Chinese Ministry of Education (CMOE)
- Ministry of Science and Technology of China (MSTC)
- Ministry of Education and Youth of the Czech Republic
- Danish Natural Science Research Council
- Carlsberg Foundation
- Danish National Research Foundation
- European Research Council under the European Community
- Helsinki Institute of Physics
- Academy of Finland
- French CNRS-IN2P3
- Region Pays de Loire
- Region Alsace
- Grants-in-Aid for Scientific Research [23340074, 25287048, 26610071] Funding Source: KAKEN
- Direct For Mathematical & Physical Scien
- Division Of Physics [1305280, 0969966, 1307461] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/G008833/1, ST/J000108/1, ST/I003398/1, 2014 STFC Nuclear Physics CG, ST/J000140/1, 1231104, ST/J000094/1] Funding Source: researchfish
- STFC [ST/J000108/1, ST/I003398/1, ST/J000094/1, ST/G008833/1, ST/J000140/1, 2014 STFC Nuclear Physics CG] Funding Source: UKRI
Ask authors/readers for more resources
The inclusive J/.nuclear modification factor (R-AA) in Pb-Pb collisions at root(NN)-N-S = 2.76TeVhas been measured by ALICE as a function of centrality in the e+ e-decay channel at mid-rapidity (| y| < 0.8) and as a function of centrality, transverse momentum and rapidity in the + -decay channel at forward-rapidity (2.5 < y < 4). The J/.yields measured in Pb-Pb are suppressed compared to those in ppcollisions scaled by the number of binary collisions. The RAAintegrated over a centrality range corresponding to 90% of the inelastic Pb-Pb cross section is 0.72 - 0.06(stat.) - 0.10(syst.) at mid-rapidity and 0.58 - 0.01(stat.) - 0.09(syst.) at forward-rapidity. At low transverse momentum, significantly larger values of RAAare measured at forward-rapidity compared to measurements at lower energy. These features suggest that a contribution to the J/.yield originates from charm quark (re) combination in the deconfined partonic medium. (C) 2014 The Authors. Published by Elsevier B. V.
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