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Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 782. pp. 474-496. ISSN 0370-2693

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The transverse momentum (pT) spectrum of prompt D0 mesons and their antiparticles has been measured via the hadronic decay channels D0 → K−π+ and D0 → K+π− in pp and PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair with the CMS detector at the LHC. The measurement is performed in the D0 meson pT range of 2–100 GeV/c and in the rapidity range of |y| < 1. The pp (PbPb) dataset used for this analysis corresponds to an integrated luminosity of 27.4 pb−1 (530 μb−1). The measured D0 meson pT spectrum in pp collisions is well described by perturbative QCD calculations. The nuclear modification factor, comparing D0 meson yields in PbPb and pp collisions, was extracted for both minimum-bias and the 10% most central PbPb interactions. For central events, the D0 meson yield in the PbPb collisions is suppressed by a factor of 5–6 compared to the pp reference in the pT range of 6–10 GeV/c. For D0 mesons in the high-pT range of 60–100 GeV/c, a significantly smaller suppression is observed. The results are also compared to theoretical calculations

Item Type: Article (Journal)
Additional Information: 7861/65916
Uncontrolled Keywords: Physics; Suppression; Quark gluon plasma; Shadowing D-meson; Open heavy-flavour
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science
Kulliyyah of Science > Department of Physics
Depositing User: Dr Mohd Adli MD Ali
Date Deposited: 27 Aug 2018 10:37
Last Modified: 24 Jan 2019 15:13
URI: http://irep.iium.edu.my/id/eprint/65916

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