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The influence of bulk evolution models on heavy-quark phenomenology

Abstract : We study the impact of different Quark-Gluon Plasma expansion scenarios in heavy-ion collisions on spectra and elliptic flow of heavy quarks. For identical heavy-quark transport coefficients relativistic Langevin simulations with different expansion scenarios can lead to appreciable variations in the calculated suppression and elliptic flow of the heavy-quark spectra, by up to a factor of two. A cross comparison with two sets of transport coefficients supports these findings, illustrating the importance of realistic expansion models for quantitative evaluations of heavy-quark observables in heavy-ion collisions. It also turns out that differences in freeze-out prescriptions and Langevin realizations play a significant role in these variations. Light-quark observables are essential in reducing the uncertainties associated with the bulk-matter evolution, even though uncertainties due to the freeze-out prescription persist.
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Preprints, Working Papers, ...
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http://hal.in2p3.fr/in2p3-00564199
Contributor : Dominique Girod <>
Submitted on : Tuesday, February 8, 2011 - 11:34:49 AM
Last modification on : Thursday, January 30, 2020 - 3:30:33 PM

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  • HAL Id : in2p3-00564199, version 1
  • ARXIV : 1102.1114

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Pol-Bernard Gossiaux, S. Vogel, H. van Hees, Jörg Aichelin, R. Rapp, et al.. The influence of bulk evolution models on heavy-quark phenomenology. 2011. ⟨in2p3-00564199⟩

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