# Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$

Kaczmarek O (2014)
Nuclear Physics A 931: 633-637.

No fulltext has been uploaded. References only!
Journal Article | Original Article | Published | English

Author
Abstract
Among quantities playing a central role in the theoretical interpretation of heavy ion collision experiments at RHIC and LHC are so-called transport coefficients. Out of those heavy quark diffusion coefficients play an important role e.g. for the analysis of the quenching of jets containing c orb quarks (D or B mesons) as observed at RHIC and LHC [1]. We report on a lattice investigation of heavy quark momentum diffusion within pure SU(3) plasma above the deconfinement transition with the quarks treated to leading order in the heavy mass expansion. We measure the relevant "colour-electric" Euclidean correlator and based on several lattice spacings perform the continuum extrapolation. This extends our previous studies [2,3] progressing towards a removal of lattice artifacts and a physical interpretation of the results. We find that the correlation function clearly exceeds its perturbative counterpart which suggests that at temperatures just above the critical one, non-perturbative interactions felt by the heavy quarks are stronger than within the weak-coupling expansion. Using an Ansatz for the spectral function which includes NNLO perturbative contributions we were able to determine, for the first time, a continuum estimate for the heavy quark momentum diffusion coefficient. (C) 2014 Elsevier B.V. All rights reserved.
Keywords
Publishing Year
ISSN
PUB-ID

### Cite this

Kaczmarek O. Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$. Nuclear Physics A. 2014;931:633-637.
Kaczmarek, O. (2014). Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$. Nuclear Physics A, 931, 633-637. doi:10.1016/j.nuclphysa.2014.09.031
Kaczmarek, O. (2014). Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$. Nuclear Physics A 931, 633-637.
Kaczmarek, O., 2014. Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$. Nuclear Physics A, 931, p 633-637.
O. Kaczmarek, “Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$”, Nuclear Physics A, vol. 931, 2014, pp. 633-637.
Kaczmarek, O.: Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$. Nuclear Physics A. 931, 633-637 (2014).
Kaczmarek, Olaf. “Continuum estimate of the heavy quark momentum diffusion coefficient $\kappa$”. Nuclear Physics A 931 (2014): 633-637.
This data publication is cited in the following publications:
This publication cites the following data publications:

### Export

0 Marked Publications

Open Data PUB

### Web of Science

View record in Web of Science®

arXiv 1409.3724

Inspire 1316337