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

Author(s): The ALICE collaboration; Adam, J; Adamova, D; Aggarwal, MM; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahn, SU; Aimo, I; Aiola, S; Ajaz, M; Akindinov, A; Alam, SN; Aleksandrov, D; Alessandro, B; Alexandre, D; Alfaro Molina, R; Alici, A; Alkin, A; Almaraz, JRM; Alme, J; Alt, T; Altinpinar, S; Altsybeev, I; Alves Garcia Prado, C; Andrei, C; Andronic, A; Anguelov, V; Anielski, J; Anticic, T; Antinori, F; Antonioli, P; Aphecetche, L; Appelshauser, H; Arcelli, S; Armesto, N; Arnaldi, R; Arsene, IC; Arslandok, M; Audurier, B; Augustinus, A; Averbeck, R; Azmi, MD; Bach, M; Badala, A; Baek, YW; Bagnasco, S; Bailhache, R; Bala, R; Baldisseri, A; Baltasar Dos Santos Pedrosa, F; Baral, RC; Barbano, AM; Barbera, R; Barile, F; Barnafoldi, GG; Barnby, LS; Barret, V; Bartalini, P; Barth, K; Bartke, J; Bartsch, E; Basile, M; Bastid, N; Basu, S; Bathen, B; Batigne, G; Batista Camejo, A; Batyunya, B; Batzing, PC; Bearden, IG; Beck, H; Bedda, C; Behera, NK; Belikov, I; Bellini, F; Bello Martinez, H; Bellwied, R; Belmont, R; Belmont-Moreno, E; Belyaev, V; Bencedi, G; Beole, S; Berceanu, I | Abstract: © 2015, The Author(s). 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 l pTl 8 GeV/c and 8 l pTl 16 GeV/c, and in six collision centrality classes. The RAAshows 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 RAAof 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.]