Details

Autor(en) / Beteiligte

• 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.

Titel

Measurement of prompt Ds+-meson production and azimuthal anisotropy in Pb–Pb collisions at sNN=5.02TeV

Ist Teil von

• Physics letters. B, 2022-04, Vol.827, p.136986, Article 136986

Ort / Verlag

United States: Elsevier B.V

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.