Inhaltszusammenfassung

The elliptic and triangular flow coefficients 𝑣2 and 𝑣3 of prompt 𝐷0, 𝐷+, and 𝐷∗+ mesons were measured at midrapidity (|𝑦|<0.8) in Pb-Pb collisions at the centre-of-mass energy per nucleon pair of 𝑠𝑁𝑁‾‾‾‾√=5.02 TeV with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays in the transverse momentum interval 1<𝑝T<36 GeV/𝑐 in central (0-10%) and semi-central (30-50%) collisions. Compared to pions, protons, and J/𝜓 mesons, the average D-meson 𝑣𝑛 harmonics are ...The elliptic and triangular flow coefficients 𝑣2 and 𝑣3 of prompt 𝐷0, 𝐷+, and 𝐷∗+ mesons were measured at midrapidity (|𝑦|<0.8) in Pb-Pb collisions at the centre-of-mass energy per nucleon pair of 𝑠𝑁𝑁‾‾‾‾√=5.02 TeV with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays in the transverse momentum interval 1<𝑝T<36 GeV/𝑐 in central (0-10%) and semi-central (30-50%) collisions. Compared to pions, protons, and J/𝜓 mesons, the average D-meson 𝑣𝑛 harmonics are found to follow a mass ordering for 𝑝T<3 GeV/𝑐, and to be similar to those of charged pions for higher 𝑝T. The coupling of the charm quark to the light quarks in the underlying medium is further investigated with the application of the event-shape engineering (ESE) technique to the D-meson 𝑣2 and 𝑝T-differential yields. The D-meson 𝑣2 is correlated with average bulk elliptic flow in both central and semi-central collisions. Within the current precision, the ratios of per-event D-meson yields in the ESE-selected and unbiased samples are found to be compatible with unity. All the measurements are found to be reasonably well described by theoretical calculations including the effects of charm-quark transport and the recombination of charm quarks with light quarks in a hydrodynamically expanding medium. » weiterlesen» einklappen

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DDC Sachgruppe:
Physik