Centrality dependence of high-pT D meson suppression in Pb-Pb collisions at (Formula presented.) TeV

The ALICE collaboration

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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(Formula presented.) 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.[Figure not available: see fulltext.]

Original languageEnglish (US)
Article number205
Pages (from-to)1-24
Number of pages24
JournalJournal of High Energy Physics
Issue number11
StatePublished - Nov 1 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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