Speakers
Description
We describe the propagation of heavy quarks in the quark-gluon plasma (QGP) by means of
a Boltzmann transport approach. We take into account the non-perturbative interaction between
heavy quarks and light quarks by means of a quasi particle approach in which light partons are
dressed with thermal masses. Such a model is able to catch the main features of non-perturbative
interaction as the increasing of the interaction in the region of low temperature, which is a fundamental ingredient to reproduce the experimental data for the nuclear suppression factor and the
elliptic flow. A main finding is that one predicts both $R_{AA}$ and $v_2$ with an underlying space-diffusion coefficient that ,within
the present uncertainties is in good agreement with present lQCD calculations.
We will also highlight the impact of radiative energy loss contribution implementing in our model
a formula for the emitted gluon spectrum calculated in a multiple scattering and higher-twist scheme.
Besides it turns out that charm quarks may be an ideal probe of the initial electromagnetic field.
In fact thanks to their short formation time, subdominant thermal production and not very
large mass they can be a sensitive probe of the initial electromagnetic field and electric conductivity of the bulk matter.
Realistic simulation shows a charm/anti-charm opposite transverse flow $v_1$ of the order of a few
percent depending on the value of the electric conductivity
of the bulk QGP.
[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.
[3]S. K. Das, S. Plumari, S. Chatterjee, J. Alam, F. Scardina, V. Greco, Phys.Lett. B768 (2017) 260-264.
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