Event-Shape Engineering for the D-meson elliptic flow in mid-central Pb-Pb collisions at sNN=5.02 TeV

0503178 - ÚJF 2020 RIV US eng J - Článek v odborném periodiku
Acharya, S. - Acosta, F. T. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Horák, D. - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šumbera, Michal - Závada, Petr … celkem 1022 autorů
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. Roč. 2019, č. 2 (2019), č. článku 150. ISSN 1029-8479. E-ISSN 1029-8479
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ - 90058
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * heavy ion collisions * hadron-hadron scattering
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 5.875, rok: 2019
Způsob publikování: Open access
https://doi.org/10.1007/JHEP02(2019)150

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 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, || < 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.
Trvalý link: http://hdl.handle.net/11104/0294996