Calculating the Jet Transport Coefficient $\hat{q}$ in Lattice Gauge Theory

Abstract

The formalism of jet modification in the higher twist approach is modified to describe a hard parton propagating through a hot thermalized medium. The leading order contribution to the transverse momentum broadening of a high energy (near on-shell) quark in a thermal medium is calculated. This involves a factorization of the perturbative process of scattering of the quark from the non-perturbative transport coefficient. An operator product expansion of the non-perturbative operator product which represents $\hat{q}$ is carried out and related via dispersion relations to the expectation of local operators. These local operators are then evaluated in quenched SU(2) lattice gauge theory.

4 pages, 2 figures, parallel talk at Hard Probes 2012

References in corpus (5)

• Extending Soft-Collinear-Effective-Theory to describe hard jets in dense QCD media
• Higher twist jet broadening and classical propagation
• Calculating the Jet Quenching Parameter $\hat{q}$ in Lattice Gauge Theory
• Elastic energy loss and longitudinal straggling of a hard jet
• No Pain, No Gain: Hard Probes of the Quark-Gluon Plasma Coming of Age