1202.5295 (Abhijit Majumder)

Calculating the Jet Quenching Parameter $\hat{q}$ in Lattice Gauge
Theory    [PDF]

Abhijit Majumder

We present a framework where first principles calculations of jet
modification may be carried out in a non-perturbative thermal environment. As
an example of this approach, we compute the leading order contribution to the
transverse momentum broadening of a high energy (near on-shell) quark in a
thermal medium. This involves a factorization of a non-perturbative operator
product from the perturbative process of scattering of the quark. An operator
product expansion of the non-perturbative operator product 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.

View original: http://arxiv.org/abs/1202.5295