Dynamical Screening and Radiative Parton Energy Loss in a Quark-gluon Plasma

Abstract

Dynamical screening in the magnetic part of the one-gluon exchange interaction is included in the study of radiative energy loss of a fast parton propagating inside a quark-gluon plasma. As a result the final radiative energy loss is about twice as large as when only the electric part of one-gluon exchange interaction is considered. A non-perturbative magnetic screening mass is also used in the estimate of the mean-free-path of parton scattering in a hot QCD matter.

Comments: 8 pages in Revtex. A minor change is made in the acknowledgments