%0 Journal Article
%A Francis, A.
%A Kaczmarek, O.
%A Laine, M.
%A Neuhaus, T.
%A Ohno, H.
%T Nonperturbative estimate of the heavy quark momentum diffusion coefficient
%J Physical review / D
%V 92
%N 11
%@ 1550-7998
%C [S.l.]
%I Soc.
%M FZJ-2015-07582
%P 116003
%D 2015
%X We estimate the momentum diffusion coefficient of a heavy quark within a pure SU(3) plasma at a temperature of about 1.5Tc. Large-scale Monte Carlo simulations on a series of lattices extending up to 1923×48 permit us to carry out a continuum extrapolation of the so-called color-electric imaginary-time correlator. The extrapolated correlator is analyzed with the help of theoretically motivated models for the corresponding spectral function. Evidence for a nonzero transport coefficient is found and, incorporating systematic uncertainties reflecting model assumptions, we obtain κ=(1.8–3.4)T3. This implies that the “drag coefficient,” characterizing the time scale at which heavy quarks adjust to hydrodynamic flow, is η−1D=(1.8–3.4)(Tc/T)2(M/1.5  GeV)  fm/c, where M is the heavy quark kinetic mass. The results apply to bottom and, with somewhat larger systematic uncertainties, to charm quarks.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000366096200006
%R 10.1103/PhysRevD.92.116003
%U https://juser.fz-juelich.de/record/279700