2019/09/14 by Grosa, Fabrizio
#FOS: Physical sciences #Nuclear Experiment (nucl-ex)
paper · doi:10.48550/arxiv.1909.06562
Heavy quarks are sensitive probes of the colour-deconfined medium formed in ultra-relativistic heavy-ion collisions, the Quark-Gluon Plasma (QGP). The ALICE Collaboration measured the production of \rm D0, \rm D+, and \rm D*+ mesons in Pb-Pb collisions at √s\rm NN=5.02 TeV. The properties of the in-medium energy loss are investigated via the measurement of the nuclear modification factor (R\rm AA) of non-strange D mesons. The modification of the D-meson transverse momentum (p\rm T) distributions inside the jet is studied via the measurement of the D-meson tagged jet R\rm AA in central Pb-Pb collisions. In mid-central collisions, the measurement of the D-meson elliptic flow (v2) at low and intermediate p\rm T gives insight into the participation of the charm quark in the collective motion of the system, while at high p\rm T it constrains the path-length dependence of the energy loss. 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 D-meson elliptic flow.