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Agrawal, N.; Akbar, Z.; Al-Turany, M.; Alam, S. N.; Aleksandrov, D.; Alici, A.; Aziz, S.; Baek, Y. W.; Barret, V.; Batigne, G.; Bhasin, A.; Blume, C.; Bock, F.; Bolozdynya, A.; Bond, P. M.; Borel, H.; Bugnon, O.; Camacho, R. S.; Chartier, M.; Chattopadhyay, S.; Cheshkov, C.; Cheynis, B.; Christakoglou, P.; Cindolo, F.; Ciupek, M. R.; Collu, A.; Contreras, J. G.; Das, P.; Dash, S.; De Marco, N.; Dupieux, P.; Elia, D.; Ercolessi, F.; Fantoni, A.; Fernández Téllez, A.; Foertsch, S.; Gauger, E. F.; Gay Ducati, M. B.; Gonzalez, V.; González-Trueba, L. H.; Grigoryan, S.; Grosa, F.; Jacak, B.; Jadlovsky, J.; Jones, P. G.; Kalteyer, A. S.; Karavichev, O.; Kashyap, V.; Kim, E. J.; Kim, J.; Kowalski, M.; Kučera, V.; Kumar, L.; Kwon, Y.; Lindner, A.; Liu, A.; Lopez, J. A.; Maevskaya, A.; Matonoha, O.; Matyja, A.; Meninno, E.; Mishra, A. N.; Miśkowiec, D.; Mulligan, J. D.; Nappi, E.; Noferini, F.; Park, J.; Paul, B.; Perrin, S.; Petráček, V.; Poljak, N.; Prino, F.; Puccio, M.; Rami, F.; Ravasenga, I.; Redlich, K.; Rogoschinski, T. S.; Russo, R.; Sahoo, R.; Sahu, D.; Schmidt, N. V.; Schotter, R.; Scioli, G.; Sekiguchi, Y.; Slupecki, M.; Smirnov, N.; Soncco, C.; Stan, I.; Swain, S.; Tabassam, U.; Tersimonov, G.; Tikhonov, A.; Timmins, A. R.; Topilskaya, N.; Tripathy, S.; Trzcinski, T. P.; Turrisi, R.; Tveter, T. S.; Vercellin, E.; Wikne, J.
The journal of high energy physics, 2022, Letnik: 2022, Številka: 1Journal Article
A bstract The production of prompt D 0 , D + , and D *+ mesons was measured at midrapidity (| y | < 0.5) in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair s NN = 5 . 02 TeV with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decay channels and their production yields were measured in central (0–10%) and semicentral (30–50%) collisions. The measurement was performed up to a transverse momentum ( p T ) of 36 or 50 GeV/c depending on the D meson species and the centrality interval. For the first time in Pb–Pb collisions at the LHC, the yield of D 0 mesons was measured down to p T = 0, which allowed a model-independent determination of the p T -integrated yield per unit of rapidity (d N/ d y ). A maximum suppression by a factor 5 and 2.5 was observed with the nuclear modification factor ( R AA ) of prompt D mesons at p T = 6–8 GeV/c for the 0–10% and 30–50% centrality classes, respectively. The D-meson R AA is compared with that of charged pions, charged hadrons, and J /ψ mesons as well as with theoretical predictions. The analysis of the agreement between the measured R AA , elliptic ( v 2 ) and triangular ( v 3 ) flow, and the model predictions allowed us to constrain the charm spatial diffusion coefficient D s . Furthermore the comparison of R AA and v 2 with different implementations of the same models provides an important insight into the role of radiative energy loss as well as charm quark recombination in the hadronisation mechanisms.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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