J/ψ and ψ(2S) production in Pb-Pb collisions with the ALICE Muon Spectrometer at the LHC

Arnaldi, R. and Abelev, B. and Adam, J. and Adamová, D. and Adare, A. M. and Aggarwal, M. M. and Aglieri, R. G. and Agócs, András and Agostinelli, A. and Aguilar, S. S. and Ahammed, Z. and Ahmad, A. and Ahmad, N. and Ahn, S. A. and Ahn, S. U. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alfaro, M. J. R. and Alici, A. and Alkin, A. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Anguelov, V. and Anielski, J. and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Lévai, Péter and Pochybova, Sona (2013) J/ψ and ψ(2S) production in Pb-Pb collisions with the ALICE Muon Spectrometer at the LHC. NUCLEAR PHYSICS A, 904-90. 595C-598C. ISSN 0375-9474

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Abstract

Charmonium states are considered important signatures of the strongly interacting medium created in heavy-ion collisions. In the ALICE experiment, these probes can be investigated in the µ +µ − decay channel, in the forward rapidity region (2.5< y <4) down to zero transverse momentum. Results on charmonia production in Pb-Pb collisions at √ sNN=2.76 TeV are presented. The centrality and transverse momentum dependence of the inclusive J/ψ nuclear modification factor are shown and compared with theoretical models. Finally, first ALICE results on the ψ(2S) production in Pb-Pb collisions are also discussed.

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