May 17 – 22, 2021
US/Eastern timezone

Charm and Bottom quarks dynamics in heavy-ion collisions: $R_{AA}$, anisotropic flows $v_n$ and their correlations to the bulk.

May 18, 2021, 9:50 AM
Room A (Zoom)

Room A


zoom co-host: Niveditha Ramasubramanian
Theory talk Bulk matter phenomena associated with strange and heavy quarks Bulk (Collectivity)


Maria Lucia Sambataro (Università degli Studi di Catania)


We describe the propagation of heavy quarks (HQs), charm and bottom, in the quark-gluon plasma by means of a full Boltzmann transport approach within a coalescence plus fragmentation hadronization and including event-by-event fluctuations. The non-perturbative dynamics and the interaction between HQs and light quarks have been taken into account through a Quasi-Particle Model (QPM). We show the D-mesons $R_{AA}$ and $v_2$ at RHIC and LHC energies, furthermore we discuss the role of the initial state fluctuations on the development of high-order heavy-flavour flow harmonics ($v_n(p_T)$, $n=3,4$). The results presented include event-shape selected D-mesons spectra and $v_n$, correlations between different D-mesons flow harmonics at LHC energies in different range of centrality selections. The events in centrality class are divided according to magnitude of the second-order harmonic reduced flow vector $q_2$. Within this approach the extracted T-dependence of the space-diffusion coefficient $D_s$ is in a agreement with lattice QCD results within the systematic uncertainties.
In the same scheme we show for the first time predictions for $R_{AA}$, $v_2$ and $v_3$ of B-mesons and electrons from semi-leptonic B-mesons decays at top LHC energies. Our results show a quite significant suppression al low $p_T$ and allow a determination of $D_s$ which is consistent with the lattice QCD calculations. These will provide novel and powerful constraints for heavy-flavour transport coefficients.

[1] S.Plumari, G.Coci, V.Minissale, S.K.Das, Y.Sun and V.Greco, Phys. Lett. B 805 (2020), 135460.

[2] F. Scardina, S. K. Das, V. Minissale, S. Plumari, V. Greco, Phys.Rev. C96 (2017) no.4, 044905.

[3] M.L.Sambataro, S.Plumari and V.Greco, Eur. Phys. J. C 80, no.12, 1140 (2020).

Primary authors

Maria Lucia Sambataro (Università degli Studi di Catania) Salvatore Plumari (University of Catania (Italy)) Yifeng Sun (INFN-LNS) Vincenzo Minissale Vincenzo Greco (University of Catania)

Presentation materials