E-resources
PDF-
Acharya, S.; Alam, S.N.; Antinori, F.; Anuj, C.; Aphecetche, L.; Arcelli, S.; Basu, S.; Beole, S.; Bhaduri, P.P.; Bianchi, L.; Bielčíková, J.; Biswas, S.; Bock, F.; Borel, H.; Chartier, M.; Cheng, T.; Cortese, P.; Danisch, M.C.; De, S.; De Martin, C.; Erokhin, A.; Ersdal, M.R.; Faggin, M.; Fionda, F.M.; Fiorenza, G.; Fokin, S.; Funicello, N.; Galvan, C.D.; Ganoti, P.; Goh, D.J.Q.; Gotovac, S.; Grigoryan, S.; Guernane, R.; Halimoglu, G.; Harton, A.; Hillemanns, H.; Husova, L.A.; Inaba, M.; Isakov, A.; Jung, J.; Khan, S.; Kharlov, Y.; Kim, S.; Knospe, A.G.; Kondratyuk, E.; Kroesen, M.; Kuhn, C.; Kurepin, A.B.; López Torres, E.; Malzacher, P.; Mandaglio, G.; Manko, V.; Mao, Y.; Marquard, M.; Meddi, F.; Melikyan, Y.; Molander, M.A.; Morozov, I.; Munzer, R.H.; Myrcha, J.W.; Oppedisano, C.; Pareek, P.; Pereira, L.G.; Peresunko, D.; Pestov, Y.; Płoskoń, M.; Poljak, N.; Preghenella, R.; Puccio, M.; Rehman, A.; Ristea, C.; Röhrich, D.; Roy, A.; Saarimaki, O.A.M.; Saha, S.; Sahoo, P.; Sakai, S.; Schmidt, C.; Schmidt, M.; Scioli, G.; Shabetai, A.; Sharma, N.; Silvermyr, D.; Singhal, V.; Stylianidis, C.P.; Suaide, A.A.P.; Sugitate, T.; Tambave, G.J.; Tapia Takaki, J.D.; Tejeda Muñoz, G.; Thomas, D.; Toia, A.; Varga-Kofarago, M.; Vercellin, E.; Volkel, B.; Voscek, D.; Vrláková, J.; Weelden, R.J.G.V.; Yamaguchi, Y.; Zhigareva, N.
Physics letters. B, 04/2022, Volume: 827Journal Article
The production yield and angular anisotropy of prompt Ds+ mesons were measured as a function of transverse momentum (pT) in Pb–Pb collisions at a centre-of-mass energy per nucleon pair sNN=5.02TeV collected with the ALICE detector at the LHC. Ds+ mesons and their charge conjugates were reconstructed at midrapidity (|y|<0.5) from their hadronic decay channel Ds+→ϕπ+, with ϕ→K−K+, in the pT intervals 2<pT<50GeV/c and 2<pT<36GeV/c for the 0–10% and 30–50% centrality intervals. For pT>10GeV/c, the measured Ds+-meson nuclear modification factor RAA is consistent with the one of non-strange D mesons within uncertainties, while at lower pT a hint for a Ds+-meson RAA larger than that of non-strange D mesons is seen. The enhanced production of Ds+ relative to non-strange D mesons is also studied by comparing the pT-dependent Ds+/D0 production yield ratios in Pb–Pb and in pp collisions. The ratio measured in Pb–Pb collisions is found to be on average higher than that in pp collisions in the interval 2<pT<8GeV/c with a significance of 2.3σ and 2.4σ for the 0–10% and 30–50% centrality intervals. The azimuthal anisotropy coefficient v2 of prompt Ds+ mesons was measured in Pb–Pb collisions in the 30–50% centrality interval and is found to be compatible with that of non-strange D mesons. The main features of the measured RAA, Ds+/D0 ratio, and v2 as a function of pT are described by theoretical calculations of charm-quark transport in a hydrodynamically expanding quark–gluon plasma including hadronisation via charm-quark recombination with light quarks from the medium. The pT-integrated production yield of Ds+ mesons is compatible with the prediction of the statistical hadronisation model.
