Transverse momentum broadening and gauge invariance
arXiv:1209.4486 · doi:10.1063/1.4763541
Abstract
In the framework of the soft-collinear effective theory, we present a gauge invariant definition of the transverse momentum broadening probability of a highly-energetic collinear quark in a medium and consequently of the jet quenching parameter .
8 pages, 7 figures; contribution to QCD@Work 2012, Lecce, June 18-21, 2012