Inclusive J/ψ and ψ(2S) production in p-Pb collisions at √sNN = 5.02 TeV with ALICE at the LHC

Winn, M. and Abelev, B. and Adam, J. and Adamová, D. and Aggarwal, M. M. and Aglieri, Rinella G. and Agnello, M. and Agostinelli, A. and Agrawal, N. and Ahammed, Z. and Ahmad, N. and Ahmad, Masoodi A. and Ahmed, I. and Ahn, S. U. and Ahn, S. A. and Aimo, I. and Aiola, S. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alexandre, D. and Alici, A. and Alkin, A. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Alves, Garcia Prado C and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Kiss, Gábor and Varga-Kőfaragó, Mónika and Lévai, Péter and Oláh, László and Pochybova, Sona (2014) Inclusive J/ψ and ψ(2S) production in p-Pb collisions at √sNN = 5.02 TeV with ALICE at the LHC. NUCLEAR PHYSICS A, 932. pp. 472-477. ISSN 0375-9474

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Abstract

We report on the inclusive J/ψ nuclear modification factor in p–Pb collisions at √sNN = 5.02 TeV as a function of rapidity y and transverse momentum pT. The experimental coverage extends down to pT = 0 GeV/c in the three rapidity ranges accessible by ALICE (−4.46 < ycms < −2.96, −1.37 < ycms < 0.46, 2.03 < ycms < 3.53). The obtained results as a function of rapidity are in agreement with theory predictions based only on shadowing or on coherent energy loss. At forward and backward rapidity, the ψ(2S) measurement complements the J/ψ results. The ratio between the ψ(2S) and J/ψ cross section is significantly smaller in p–Pb than in pp collisions in both rapidity regions.

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