Radiative energy loss and radiative p⊥-broadening of high-energy partons in QCD matter

I give a self-contained review on radiative p⊥-broadening and radiative energy loss of high-energy partons in QCD matter. The typical p⊥2 of high-energy partons receives a double logarithmic correction due to the recoiling effect of medium-induced gluon radiation. Such a double logarithmic term, averaged over the path length of the partons, can be taken as the radiative correction to the jet quenching parameter qˆ and hence contributes to radiative energy loss. This has also been confirmed by detailed calculations of energy loss by radiating two gluons.