Event-Shape Engineering for the D-meson elliptic flow in mid-central Pb-Pb collisions at sNN=5.02 TeV
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Zimmermann, M. B. and Zinovjev, G. and ALICE collaboration... Show more Show less
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Abstract
The production yield of prompt D mesons and their elliptic flow
coefficient v(2) were measured with the Event-Shape Engineering (ESE)
technique applied to mid-central (10-30\% and 30-50\% centrality
classes) Pb-Pb collisions at the centre-of-mass energy per nucleon pair
sNN=5.02 TeV, with the ALICE detector at the LHC. The ESE technique
allows the classification of events, belonging to the same centrality,
according to the azimuthal anisotropy of soft particle production in the
collision. The reeported measurements give the opportunity to investigate
the dynamics of charm quarks in the Quark-Gluon Plasma and provide
information on their participation in the collective expansion of the
medium. D mesons were reconstructed via their hadronic decays at
mid-rapidity, || < 0.8, in the transverse momentum interval 1 < p(T) <
24 GeV/c. The v(2) coefficient is found to be sensitive to the
event-shape selection confirming a correlation between the D-meson
azimuthal anisotropy and the collective expansion of the bulk matter,
while the per-event D-meson yields do not show any significant
modification within the current uncertainties.... Show more Show less