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

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Measurement of D0, D+, D*+ and D s + production in Pb-Pb collisions at √sNN=5.02 TeV. / ALICE Collaboration; Acharya, S; Adolfsson, Jonatan; Christiansen, Peter; Ljunggren, Martin; Oskarsson, Anders; Richert, Tuva; Silvermyr, David; Stenlund, Evert; Vislavicius, Vytautas; Zou, S.

In: Journal of High Energy Physics, Vol. 2018, No. 10, 174, 2018.

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TY - JOUR

T1 - Measurement of D0, D+, D*+ and D s + production in Pb-Pb collisions at √sNN=5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S

AU - Adolfsson, Jonatan

AU - Christiansen, Peter

AU - Ljunggren, Martin

AU - Oskarsson, Anders

AU - Richert, Tuva

AU - Silvermyr, David

AU - Stenlund, Evert

AU - Vislavicius, Vytautas

AU - Zou, S.

N1 - Export Date: 22 November 2018

PY - 2018

Y1 - 2018

N2 - We report measurements of the production of prompt D0, D+, D*+ and Ds + 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 Ds + 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 sNN=2.76 TeV. For Ds + 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.[Figure not available: see fulltext.] © 2018, The Author(s).

AB - We report measurements of the production of prompt D0, D+, D*+ and Ds + 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 Ds + 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 sNN=2.76 TeV. For Ds + 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.[Figure not available: see fulltext.] © 2018, The Author(s).

KW - Heavy Ion Experiments

U2 - 10.1007/JHEP10(2018)174

DO - 10.1007/JHEP10(2018)174

M3 - Article

VL - 2018

JO - Journal of High Energy Physics

T2 - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 10

M1 - 174

ER -