scholarly journals Nonperturbative estimate of the heavy quark momentum diffusion coefficient

2015 ◽  
Vol 92 (11) ◽  
Author(s):  
A. Francis ◽  
O. Kaczmarek ◽  
M. Laine ◽  
T. Neuhaus ◽  
H. Ohno
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Quark ◽  
Quark Momentum

scholarly journals Heavy quark momentum diffusion coefficient from lattice QCD

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
Debasish Banerjee ◽  
Saumen Datta ◽  
Rajiv Gavai ◽  
Pushan Majumdar
Keyword(s):  
Diffusion Coefficient ◽  
Lattice Qcd ◽  
Heavy Quark ◽  
Quark Momentum

scholarly journals Towards a non-perturbative measurement of the heavy quark momentum diffusion coefficient

2012 ◽  
Author(s):  
Jens Langelage ◽  
Olaf Kaczmarek ◽  
Anthony Francis ◽  
Mikko Laine
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Quark ◽  
Quark Momentum

scholarly journals Heavy quark momentum diffusion coefficient in 3D gluon plasma

2021 ◽  
Vol 1005 ◽  
pp. 121970
Author(s):  
K. Boguslavski ◽  
A. Kurkela ◽  
T. Lappi ◽  
J. Peuron
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Quark ◽  
Gluon Plasma ◽  
Quark Momentum

scholarly journals Heavy quark momentum diffusion coefficient from the lattice

2020 ◽  
Author(s):  
Viljami Leino ◽  
Nora Brambilla ◽  
Peter Petreczky ◽  
Antonio Vairo ◽  
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Quark ◽  
Quark Momentum

scholarly journals Data-driven extraction of heavy quark diffusion in quark-gluon plasma

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
Shuang Li ◽  
Jinfeng Liao
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Data Driven ◽  
Strong Increase ◽  
Heavy Flavor ◽  
Modeling Framework ◽  
Wide Range

Abstract Heavy quark production provides a unique probe of the quark-gluon plasma transport properties in heavy ion collisions. Experimental observables like the nuclear modification factor $$R_\mathrm{AA}$$RAA and elliptic anisotropy $$v_\mathrm{2}$$v2 of heavy flavor mesons are sensitive to the heavy quark diffusion coefficient. There now exist an extensive set of such measurements, which allow a data-driven extraction of this coefficient. In this work, we make such an attempt within our recently developed heavy quark transport modeling framework (Langevin-transport with Gluon Radiation, LGR). A question of particular interest is the temperature dependence of the diffusion coefficient, for which we test a wide range of possibility and draw constraints by comparing relevant charm meson data with model results. We find that a relatively strong increase of diffusion coefficient from crossover temperature $$T_c$$Tc toward high temperature is preferred by data. We also make predictions for Bottom meson observables for further experimental tests.

scholarly journals Lattice QCD constraints on the heavy quark diffusion coefficient

2020 ◽  
Vol 102 (7) ◽  
Author(s):  
Nora Brambilla ◽  
Viljami Leino ◽  
Peter Petreczky ◽  
Antonio Vairo ◽  
Keyword(s):  
Diffusion Coefficient ◽  
Lattice Qcd ◽  
Heavy Quark

scholarly journals Heavy quark diffusion in an overoccupied gluon plasma

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
K. Boguslavski ◽  
A. Kurkela ◽  
T. Lappi ◽  
J. Peuron
Keyword(s):  
Diffusion Coefficient ◽  
Kinetic Theory ◽  
Heavy Quark ◽  
Rapid Growth ◽  
Linear Growth ◽  
Gluon Plasma ◽  
Gauge Invariant ◽  
Damped Oscillations ◽  
Plasmon Frequency ◽  
Far From Equilibrium

Abstract We extract the heavy-quark diffusion coefficient κ and the resulting momentum broadening 〈p2〉 in a far-from-equilibrium non-Abelian plasma. We find several features in the time dependence of the momentum broadening: a short initial rapid growth of 〈p2〉, followed by linear growth with time due to Langevin-type dynamics and damped oscillations around this growth at the plasmon frequency. We show that these novel oscillations are not easily explained using perturbative techniques but result from an excess of gluons at low momenta. These oscillation are therefore a gauge invariant confirmation of the infrared enhancement we had previously observed in gauge-fixed correlation functions. We argue that the kinetic theory description of such systems becomes less reliable in the presence of this IR enhancement.

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