Abstract
Heavy flavour mesons are used as powerful tools for the study of the strongly interacting medium in heavy ion collisions as heavy quarks are sensitive to the transport properties of the medium. In these proceedings, D0 nuclear modification factors, comparing the yields in PbPb and pp collisions, and azimuthal anisotropies in PbPb collisions are reported. Prompt D0 mesons and their antiparticles have been measured with the CMS detector via the hadronic decay channels D0 → K−π+ and D0 → K+π− in PbPb and pp collisions at a centre-of-mass energy of 5.02 TeV. Nonprompt D0 from b quark decays are subtracted. The D0 results are compared to inclusive charged particles, non-prompt J/ψ mesons from b decays and B+ mesons in order to reveal possible meson mass dependence of the observables.
Highlights
A detailed description of the CMS experiment can be found in Ref. [12]
The D0 candidates are reconstructed by combining pairs of oppositely charged particle tracks with an invariant mass within 0.2 GeV/c2 of the world-average D0 mass [13]
For each pair of selected tracks, two D0 candidates are created by assuming that one of the particles has the mass of the pion while the other has the mass of the kaon, and vice-versa
Summary
A detailed description of the CMS experiment can be found in Ref. [12]. The D0 candidates are reconstructed by combining pairs of oppositely charged particle tracks with an invariant mass within 0.2 GeV/c2 of the world-average D0 mass [13]. At high pT, the charm hadron vn coefficient can constrain the path length dependence of charm quark energy loss [10, 11], complementary to the RAA measurements.
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