Naslov
Measurement of D0, D+, D∗+ and D+s production in Pb-Pb collisions at √sNN=5.02 TeV

Autori
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zou, S

Kolaboracija
ALICE Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2018 (2018), 10; 174, 30

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
heavy ion: scattering ; meson ; impact parameter ; nucleus ; transverse momentum ; charged particle ; nucleon nucleon ; energy loss

Sažetak
We report measurements of the production of prompt D0, D+, D∗+ and D+s mesons in Pb–Pb collisions at the centre-of-mass energy per nucleon-nucleon pair √sNN=5.02 TeV, in the centrality classes 0–10%, 30–50% and 60–80%. The D-meson production yields are measured at mid-rapidity (|y| < 0.5) as a function of transverse momentum (pT). The pT intervals covered in central collisions are: 1<pT<50 GeV/c for D0, 2<pT<50GeV/c for D+, 3<pT<50GeV/c for D∗+, and 4<pT<16GeV/c for D+s mesons. The nuclear modification factors (RAA) for non- strange D mesons (D0, D+, D∗+) show minimum values of about 0.2 for pT = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at s√NN=2.76 TeV. For D+s mesons, the values of RAA are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average RAA of non- strange D mesons is compatible with that of charged particles for pT>8 GeV/c, while it is larger at lower pT. The nuclear modification factors for strange and non-strange D mesons are also compared to theoretical models with different implementations of in-medium energy loss.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA