Event-Shape Engineering for the D-meson elliptic flow in mid-central Pb-Pb collisions at sNN−−−√=5.02 TeV
ALICE Collaboration. (2019). Event-Shape Engineering for the D-meson elliptic flow in mid-central Pb-Pb collisions at sNN−−−√=5.02 TeV. Journal of High Energy Physics, 2019 (2), 150. doi:10.1007/jhep02(2019)150
Published in
Journal of High Energy PhysicsAuthors
Rak, Jan |
Date
2019Copyright
© The Author(s) 2019.
The production yield of prompt D mesons and their elliptic flow coefficient v2
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 reported 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, |η| < 0.8,
in the transverse momentum interval 1 < pT < 24 GeV/c. The v2 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.
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