Probabilistic picture of in-medium jet evolution

We briefly discuss the recently developed probabilistic picture for in-medium jet evolution that is driven by independent multiple scatterings and branchings. These are controlled by the jet quenching parameter $\widehat{q}$. In this framework, large radiative corrections to $p_{\perp }$-broadening of partons in the jet, enhanced by a double logarithm (DL) of the medium size $L$, are recovered. We argue that these non-local corrections are universal and can be reabsorbed in a renormalization of the jet quenching parameter without spoiling the probabilistic picture. As a consequence, we find that for large media, the mean radiative energy loss result scales as $L^{2+\gamma }$, where the anomalous dimension $\gamma =2\sqrt{{\alpha }_s{N}_c\mathrm{/}\pi }$.