Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at √sNN = 2.76 TeV

Adam, J. and Antičić, Tome and Erhardt, Filip and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Zyzak, M. (ALICE Collaboration) (2015) Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics, 2015 (11). pp. 205-24. ISSN 1029-8479

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Abstract

The nuclear modification factor, RAA, of the prompt charmed mesons D0 , D+ and D∗+, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a centre-of-mass energy √sNN = 2.76 TeV in two transverse momentum intervals, 5 < pT < 8 GeV/c and 8 < pT < 16 GeV/c, and in six collision centrality classes. The RAA shows a maximum suppression of a factor of 5–6 in the 10% most central collisions. The suppression and its centrality dependence are compatible within uncertainties with those of charged pions. A comparison with the RAA of non-prompt J/ψ from B meson decays, measured by the CMS Collaboration, hints at a larger suppression of D mesons in the most central collisions.

Item Type: Article
Keywords: charm physics, heavy ions, heavy-ion collision
Date: November 2015
Subjects: NATURAL SCIENCES > Physics
Additional Information: Open Access. © Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. Received: August 7, 2015. Accepted: October 28, 2015 Published: November 30, 2015.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Nikola Poljak
Date Deposited: 27 May 2016 20:29
Last Modified: 28 May 2016 19:59
URI: http://digre.pmf.unizg.hr/id/eprint/4860

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