Nonconformal holographic model for $D$-meson suppression at energies available at the CERN Large Hadron Collider

Nonconformal holographic model for $D$ -meson suppression at energies available at the CERN Large Hadron Collider

Santosh K. Das and Ali Davody

Phys. Rev. C 89, 054912 – Published 22 May 2014

Abstract

The drag force of charm quarks propagating through a thermalized system of Quark Gluon Plasma (QGP) has been considered within the framework of both conformal and nonconformal anti–de Sitter (AdS) correspondence. A newly derived Einstein fluctuation-dissipation relation has been used to calculate the heavy flavor diffusion coefficients. Using the drag and diffusion coefficients as inputs, the Langevin equation has been solved to study the heavy flavor suppression factor. It has been shown that within conformal AdS correspondence the $D$ -meson suppression at Large Hadron Collider energy can be reproduced, whereas the nonconformal AdS correspondence fails to reproduce the experimental results. This suggests collisional loss alone within nonconformal AdS correspondence cannot reproduce the experimental results, and inclusion of radiative loss becomes important.

Received 29 January 2013
Revised 8 April 2014

DOI:https://doi.org/10.1103/PhysRevC.89.054912

Authors & Affiliations

Santosh K. Das^1,2,3 and Ali Davody⁴

¹Department of Physics, Yonsei University, Seoul, Korea
²Department of Physics and Astronomy, University of Catania, Via S. Sofia 64, 1-95125 Catania, Italy
³Laboratori Nazionali del Sud, INFN-LNS, Via S. Sofia 62, I-95123 Catania, Italy
⁴School of Particles and Accelerators, Institute for research in Fundamental Science, P.O. Box 11365-9161, Tehran, Iran

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Vol. 89, Iss. 5 — May 2014

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Physical Review C

covering nuclear physics