Measurement of an excess in the yield of J/$\psi$ at very low $p_{\rm T}$ in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

Abstract : We report on the first measurement of an excess in the yield of J/$\psi$ at very low transverse momentum ($p_{\rm T}< 0.3$ GeV/$c$) in peripheral hadronic Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV, performed by ALICE at the CERN LHC. Remarkably, the measured nuclear modification factor ($R_{\rm AA}$) of J/$\psi$ in the rapidity range $2.5
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Physical Review Letters, American Physical Society, 2016, 116, pp.222301 〈10.1103/PhysRevLett.116.222301〉
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http://hal.in2p3.fr/in2p3-01207016
Contributeur : Sylvie Flores <>
Soumis le : mercredi 30 septembre 2015 - 07:32:13
Dernière modification le : mardi 19 juin 2018 - 01:19:57

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J. Adam, L. Aphecetche, A. Baldisseri, Guillaume Batigne, I. Belikov, et al.. Measurement of an excess in the yield of J/$\psi$ at very low $p_{\rm T}$ in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV. Physical Review Letters, American Physical Society, 2016, 116, pp.222301 〈10.1103/PhysRevLett.116.222301〉. 〈in2p3-01207016〉

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