Towards the dynamical study of heavy-flavor quarks in the Quark-Gluon-Plasma - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Conference Papers Year : 2014

Towards the dynamical study of heavy-flavor quarks in the Quark-Gluon-Plasma

H. Berrehrah
  • Function : Author
E. Bratkovskaya
  • Function : Author
W. Cassing
  • Function : Author
Pol-Bernard Gossiaux
Joerg Aichelin

Abstract

Within the aim of a dynamical study of on- and off-shell heavy quarks Q in the quark gluon plasma (QGP) - as produced in relativistic nucleus-nucleus collisions - we study the heavy quark collisional scattering on partons of the QGP. The elastic cross sections $\sigma_{q,g-Q}$ are evaluated for perturbative partons (massless on-shell particles) and for dynamical quasi-particles (massive off-shell particles as described by the dynamical quasi-particles model "DQPM") using the leading order Born diagrams. We demonstrate that the finite width of the quasi-particles in the DQPM has little influence on the cross sections $\sigma_{q,g-Q}$ except close to thresholds. We, furthermore, calculate the heavy quark relaxation time as a function of temperature T within the different approaches using these cross sections.

Dates and versions

in2p3-00919686 , version 1 (17-12-2013)

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Cite

H. Berrehrah, E. Bratkovskaya, W. Cassing, Pol-Bernard Gossiaux, Joerg Aichelin. Towards the dynamical study of heavy-flavor quarks in the Quark-Gluon-Plasma. 14th International Conference on Strangeness in Quark Matter - SQM 2013, Jul 2013, Birmingham, United Kingdom. pp.012076, ⟨10.1088/1742-6596/509/1/012076⟩. ⟨in2p3-00919686⟩
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