Centrality dependence of high-p(T) D meson suppression in Pb-Pb collisions at root s(NN)=2.76 TeV
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M.... Show more Show less
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Abstract
The nuclear modification factor, R-AA, of the prompt charmed mesons D-0,
D+ and D{*}+, and their antiparticles, was measured with the ALICE
detector in Pb-Pb collisions at a centre-of-mass energy root s(NN) = 2 :
76 TeV in two transverse momentum intervals, 5 < p(T) < 8 GeV/c and 8 <
p(T) < 16 GeV/c, and in six collision centrality classes. The R-AA shows
a maximum suppression of a factor of 5\{6 in the 10\% most central
collisions. The suppression and its centrality dependence are compatible
wiithin uncertainties with those of charged pions. A comparison with the
R-AA of non-prompt J/psi from B meson decays, measured by the CMS
Collaboration, hints at a larger suppression of D mesons in the most
central collisions.... Show more Show less