Measurement of the D-meson nuclear modification factor and elliptic flow in Pb-Pb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV with ALICE at the LHC

Abstract

Heavy-flavour hadrons are effective probes to study the Quark-Gluon Plasma (QGP) formed in ultra-relativistic heavy-ion collisions. The ALICE Collaboration measured the D-mesons (D${}^0$, D${}^{+}$, D*${}^{+}$ and D${}_{\text{s}}^{+}$) production in Pb-Pb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV. The in-medium energy loss can be studied by means of the nuclear modification factor ($R_{\text{AA}}$). The comparison between the D${}_{\text{s}}^{+}$ and the non-strange D-meson $R_{\text{AA}}$ can help to study the hadronisation mechanism of the charm quark in the QGP. In semi-central collisions the measurement of the D-meson elliptic flow, $v_2$, at low $p_{\text{T}}$ allows to investigate the participation of the heavy quarks in the collective expansion of the system while at high $p_{\text{T}}$ it constrains the path-length dependence of the energy loss. Furthermore the Event-Shape Engineering (ESE) technique is used to measure D-meson elliptic flow in order to study the coupling of the charm quarks to the light quarks of the underlying medium.

5 pages, 6 figures, Proceedings of the 21th Particles and Nuclei International Conference, Beijing, China

References in corpus (4)

• PYTHIA 6.4 Physics and Manual
• Measurement of D-meson production at mid-rapidity in pp collisions at $\sqrt{\mathbf{s}}=7$ TeV
• Heavy flavours in heavy-ion collisions: quenching, flow and correlations
• Heavy Flavor Hadrons in Statistical Hadronization of Strangeness-rich QGP

Cited by in corpus (3)

• DREENA-B framework: first predictions of $R_{AA}$ and $v_2$ within dynamical energy loss formalism in evolving QCD medium
• Exploring the initial stages in heavy-ion collisions with high-pT RAA and v2 theory and data
• Impacts of EMC effects on the D meson modification factor in equilibrating QGP