Radiative quark
-broadening in a quark-gluon plasma beyond the soft gluon approximation
B. G. Zakharov
L.D. Landau Institute for Theoretical Physics, 117334 Moscow, Russia
Abstract
We study the radiative correction to -broadening of a fast quark
in a quark-gluon plasma beyond the
soft gluon approximation.
We find that the radiative processes can suppress considerably
-broadening.
This differs dramatically from previous calculations to logarithmic
accuracy in the soft gluon approximation, predicting
a considerable enhancement of -broadening.