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J/ψ elliptic flow in Pb-Pb Collisions at √sNN=2.76 TeV

Abbas, E. and Abelev, B. and Adam, J. and Adamová, D. and Adare, A. M. and Aggarwal, M. M. and Aglieri, Rinella G. and Agnello, M. and Agócs, András and Agostinelli, A. and Ahammed, Z. and Ahmad, N. and Ahmad, Masoodi A. and Ahn, S. A. and Ahn, S. U. and Aimo, I. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alici, A. and Alkin, A. and Almaráz, Aviña E. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Lévai, Péter and Molnár, Levente and Pochybova, Sona (2013) J/ψ elliptic flow in Pb-Pb Collisions at √sNN=2.76 TeV. PHYSICAL REVIEW LETTERS, 111 (16). ISSN 0031-9007

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Abstract

We report on the first measurement of inclusive J/ψ elliptic flow, v 2, in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN = 2.76 TeV in the rapidity range 2 . 5 < y < 4 .0. The dependence of the J/ψ v 2 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0 ≤ p T < 10 GeV/ c. For semi-central Pb-Pb collisions at √sNN = 2.76 TeV, an indication of non-zero v 2 is observed with a maximum value of v 2 = 0 .116 ± 0 .046 (stat . ) ± 0 .029 (syst . ) for J/ψ in the transverse momentum range 2 ≤ p T < 4 GeV/ c. The elliptic flow measurement complements the previously reported ALICE results on the inclusive J/ψ nuclear modification factor and favors the scenario of a significant fraction of J/ψ production from charm quarks in a deconfined partonic phase.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 08 Aug 2024 07:19
Last Modified: 08 Aug 2024 07:19
URI: https://real.mtak.hu/id/eprint/202085

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