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

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.
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http://hal.in2p3.fr/in2p3-00919686
Contributor : Sylvie Flores <>
Submitted on : Tuesday, December 17, 2013 - 11:03:50 AM
Last modification on : Thursday, January 30, 2020 - 3:30:33 PM

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H. Berrehrah, E. Bratkovskaya, W. Cassing, Pol-Bernard Gossiaux, Jörg 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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