Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

Adam, J. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2016) Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics, 2016 (5). Art.No.179-48. ISSN 1029-8479

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.
Language: English

Download (1MB) | Preview

Abstract

The production of J/ψ and ψ(2S) was measured with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5< y< 4) down to zero transverse momentum (pT) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average pT is presented. The J/ψ suppression, quantified with the nuclear modification factor (RAA), was studied as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/ψ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured in pp and Pb-Pb collisions.

Item Type: Article
Keywords: differential studies, forward rapidity, lead-lead
Date: 31 May 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: Open Access, Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. Received: February 5, 2016. Accepted: May 9, 2016. Published: May 31, 2016.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 30 Oct 2017 12:15
Last Modified: 03 Nov 2018 18:15
URI: http://digre.pmf.unizg.hr/id/eprint/5633

Actions (login required)

View Item View Item