Non-perturbative contribution to the collisional broadening and medium induced radiation in QCD plasmas

by ismail soudi

Monday 31 May 2021, 16:00 → 17:00 Europe/Zurich

Zoom (CERN)

Due the famous infrared problem of finite temperature QCD, perturbative calculation of transport phenomena can receive large non-perturbative contributions. Here, we investigate the impact of non-perturbative contributions on jet-medium interactions, by incorporating non-perturbative contributions to the collisional broadening kernel $C(b_\perp)$, which determines the rate of medium induced radiation. We construct the collision kernel $C(b_\perp)$ non-perturbatively, by matching lattice EQCD calculations [1] with the correct ultraviolet behavior of QCD. By comparing the results for medium induced radiation in infinite and finite QCD plasmas [2] to leading order and next to leading order calculations, we assess the importance of non-perturbative aspects of momentum broadening for jet quenching calculations.

 

[1] G. D. Moore and N. Schlusser, Phys. Rev. D101, 014505(2020),  [Erratum: Phys.Rev.D  101, 059903 (2020)], arXiv:1911.13127 [hep-lat]

[2] G. D. Moore, S. Schlichting,  N. Schlusser and I. Soudi [arXiv: 2105.01679]