Strangeness in Quark Matter 2016

Heavy quark dynamics in QCD matter

28 Jun 2016, 17:00

20m

Joseph Wood Krutch Theatre (Clark Kerr Campus)

Contributed Talk Heavy Quark Production

Speaker

Santosh Kumar Das (University of Catania, Italy)

Description

We address the difficulties of the present theoretical approaches to have a self-consistent description of the experimental data at both RHIC and LHC. In particular a puzzling relation between the nuclear modification factor $R_{AA}(p_T)$ and the elliptic flow $v_2(p_T)$ related to heavy quark has been observed which challenged existing models. We discuss, comparing different models and approaches, how the temperature dependence of the heavy quark drag coefficient and/or the $\hat{q}$ can account for a large part of such a puzzle. We point out that for the same $R_{AA}(p_T)$ one can generate 2-3 times more $v_2$ depending on the temperature dependence of the heavy quark drag coefficient. We discuss how the $R_{AA}(p_T)$ and $v_2(p_T)$ tension can be further improve by means of a comparison in between the full solution of the Boltzmann collision integral with the Fokker-Planck equation. We highlight the impact of radiation as well as external magnetic field on heavy quark $R_{AA}(p_T)$ and $v_2(p_T)$. [1] S. K. Das, F. Scardina, S. Plumari, V.Greco Phys.Rev. C90 (2014) 044901 [2] S. K. Das, F. Scardina, S. Plumari, V.Greco, Phys.Lett. B747 (2015) 260-264

Presentation materials

1700_Das_SQM_2016.pdf

Peer reviewing

Paper

Accepted on 13 Nov 2016 by Jochen Thaeder

das_SQM16_121116.pdf