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Alam, S. N.; Anguelov, V.; Arcelli, S.; Arsene, I. C.; Barret, V.; Behera, N. K.; Belikov, I.; Bencedi, G.; Berzano, D.; Browning, T. A.; Bruno, G. E.; Buncic, P.; Carena, F.; Casula, E. A. R.; Ceballos Sanchez, C.; Cerello, P.; Cherney, M.; Cleymans, J.; Cortés Maldonado, I.; Cuautle, E.; Das, I.; De Marco, N.; Di Mauro, A.; Dietel, T.; Dubey, A. K.; Eum, J.; Fionda, F. M.; Foka, P.; Fuchs, U.; Giubellino, P.; Gorbunov, S.; Guernane, R.; Hadjidakis, C.; Hamar, G.; Hussain, N.; Hutter, D.; Ilkaev, R.; Ivanov, V.; Karayan, L.; Kim, J. S.; Kiss, G.; Klein, J.; Kofarago, M.; Kumar, A.; La Pointe, S. L.; Lardeux, A.; Laudi, E.; Lehas, F.; Lemmon, R. C.; Mahajan, S.; Mareš, J.; Martínez, M. I.; Masciocchi, S.; Masoni, A.; Mastroserio, A.; Meddi, F.; Minervini, L. M.; Mukherjee, M.; Musa, L.; Nair, R.; Nazarenko, S.; Nicassio, M.; Nielsen, B. S.; Nikulin, S.; Nomokonov, P.; Pareek, P.; Paticchio, V.; Petrov, V.; Piyarathna, D. B.; Poghosyan, M. G.; Porter, J.; Pujahari, P.; Ren, X.; Riabov, V.; Rubio Montero, A. J.; Sahu, P. K.; Scarlassara, F.; Schukraft, J.; Schuster, T.; Šefčík, M.; Shabetai, A.; Shangaraev, A.; Sharma, A.; Shtejer, K.; Siddhanta, S.; Song, J.; Tauro, A.; Tejeda Muñoz, G.; Trombetta, G.; Ullaland, K.; Vallero, S.; Van Hoorne, J. W.; Vande Vyvre, P.; Vasiliev, A.; Vergara Limón, S.; Voloshin, S. A.; Weber, M.; Wessels, J. P.; Wilkinson, J.; Yoo, I.-K.
The journal of high energy physics, 03/2016, Letnik: 2016, Številka: 3Journal Article
A bstract The production of prompt charmed mesons D 0 , D + and D ∗+ , and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, s N N , of 2 . 76 TeV. The production yields for rapidity | y | < 0 . 5 are presented as a function of transverse momentum, p T , in the interval 1–36 GeV /c for the centrality class 0–10% and in the interval 1–16 GeV /c for the centrality class 30–50%. The nuclear modification factor R AA was computed using a proton-proton reference at s = 2.76 TeV, based on measurements at s = 7 TeV and on theoretical calculations. A maximum suppression by a factor of 5-6 with respect to binary-scaled pp yields is observed for the most central collisions at p T of about 10 GeV /c . A suppression by a factor of about 2-3 persists at the highest p T covered by the measurements. At low p T (1-3 GeV /c ), the R AA has large uncertainties that span the range 0.35 (factor of about 3 suppression) to 1 (no suppression). In all p T intervals, the R AA is larger in the 30-50% centrality class compared to central collisions. The D-meson R AA is also compared with that of charged pions and, at large p T , charged hadrons, and with model calculations.
