1. Transverse momentum dependence of D-meson production in Pb-Pb collisions at root S-NN=2.76 TeV
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ADAM, J, ADAMOVA, D, AGGARWAL, MM, RINELLA, GA, AGNELLO, M, AGRAWAL, N, AHAMMED, Z, AHN, SU, AIOLA, S, AKINDINOV, A, ALAM, SN, ALEKSANDROV, D, ALESSANDRO, B, ALEXANDRE, D, MOLINA, RA, ALICI, A, ALKIN, A, ALMARAZ, JRM, ALME, J, ALT, T, ALTINPINAR, S, ALTSYBEEV, I, PRADO, CAG, ANDREI, C, ANDRONIC, A, ANGUELOV, V, ANIELSKI, J, ANTICIC, T, ANTINORI, F, ANTONIOLI, P, APHECETCHE, L, APPELSHAUSER, H, ARCELLI, S, ARNALDI, R, ARNOLD, OW, ARSENE, IC, ARSLANDOK, M, AUDURIER, B, AUGUSTINUS, A, AVERBECK, R, AZMI, MD, BADALA, A, BAEK, YW, BAGNASCO, S, BAILHACHE, R, BALA, R, BALDISSERI, A, 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, CAMEJO, AB, BATYUNYA, B, BATZING, PC, BEARDEN, IG, BECK, H, BEDDA, C, BEHERA, NK, BELIKOV, I, BELLINI, F, MARTINEZ, HB, BELLWIED, R, BELMONT, R, BELMONT-MORENO, E, BELYAEV, V, BENCEDI, G, BEOLE, S, BERCEANU, I, BERCUCI, A, BERDNIKOV, Y, BERENYI, D, BERTENS, RA, BERZANO, D, BETEV, L, BHASIN, A, BHAT, IR, BHATI, AK, BHATTACHARJEE, B, BHOM, J, BIANCHI, L, BIANCHI, N, BIANCHIN, C, BIELCIK, J, BIELCIKOVA, J, BILANDZIC, A, BISWAS, R, BISWAS, S, BJELOGRLIC, S, BLAIR, JT, BLAU, D, BLUME, C, BOCK, F, BOGDANOV, A, BOGGILD, H, BOLDIZSAR, L, BOMBARA, M, BOOK, J, BOREL, H, BORISSOV, A, BORRI, M, BOSSU, F, BOTTA, E, BOTTGER, S, BOURJAU, C, BRAUN-MUNZINGER, P, BREGANT, M, BREITNER, T, BROKER, TA, BROWNING, TA, BROZ, M, BRUCKEN, EJ, BRUNA, E, BRUNO, GE, BUDNIKOV, D, BUESCHING, H, BUFALINO, S, BUNCIC, P, BUSCH, O, BUTHELEZI, Z, BUTT, JB, BUXTON, JT, CAFFARRI, D, CAI, X, CAINES, H, DIAZ, LC, CALIVA, A, VILLAR, EC, CAMERINI, P, CARENA, F, CARENA, W, CARNESECCHI, F, CASTELLANOS, JC, CASTRO, AJ, CASULA, EAR, SANCHEZ, CC, CEPILA, J, CERELLO, P, CERKALA, J, CHANG, B, CHAPELAND, S, CHARTIER, M, CHARVET, JL, CHATTOPADHYAY, S, CHELNOKOV, V, CHERNEY, M, CHESHKOV, C, CHEYNIS, B, BARROSO, VC, CHINELLATO, DD, CHO, S, CHOCHULA, P, 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- Subjects
Charm ,Heavy Ion Experiments ,Flow ,Energy-Loss ,Qcd Matter ,Charm Physics ,Heavy-Ion Collisions ,Heavy ion Experiments ,Quark gluon plasma ,Charm physics ,HEAVY-ION COLLISIONS ,ENERGY-LOSS ,QCD MATTER ,LHC ,FLAVOR ,CHARM ,MODEL ,FLOW ,Lhc ,Quark Gluon Plasma ,Flavor ,Model - Abstract
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, root s(NN), of 2.76 TeV. The production yields for rapidity vertical bar y vertical bar < 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 root s = 2.76 TeV, based on measurements at root 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.
- Published
- 2016