Speaker
Description
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).
