$D^0$-Meson $R_{AA}$ in PbPb Collisions at $\sqrt{s_{NN}}$ = 5.02 TeV and Elliptic Flow in pPb Collisions at $\sqrt{s_{NN}}$ = 8.16 TeV with CMS

TL;DR

This paper presents measurements of $D^0$-meson nuclear modification factor in PbPb collisions and elliptic flow in pPb collisions at LHC energies, providing insights into charm quark interactions with the quark-gluon plasma.

Contribution

It reports new measurements of $D^0$ nuclear modification and elliptic flow at different collision systems and energies, enhancing understanding of charm quark behavior in hot and cold nuclear matter.

Findings

$D^0$ suppression observed in PbPb collisions.

Significant $D^0$ elliptic flow in pPb collisions.

Results constrain models of charm quark energy loss and flow.

Abstract

The study of charm production in heavy-ion collisions is considered an excellent probe for the properties of the hot and dense medium created in heavy-ion collisions. Measurements of D-meson nuclear modification can provide strong constraints into the mechanisms of in-medium energy loss and charm flow in the medium. The measurement of $D^0$ elliptic flow in pPb collisions helps us understand the strength of charm quarks coupling to significantly reduced systems which demonstrate hydrodynamic properties. In this paper, the measurements of the $D^0$ nuclear modification factor in PbPb collisions at 5.02 TeV together with the new measurement of $D^0$ elliptic flow in high multiplicity pPb collisions at 5.02 TeV using the two-particle correlation method will be presented.