Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1836490 | Nuclear Physics A | 2014 | 6 Pages |
Abstract
In the context of the recently derived probabilistic picture of in-medium jet evolution, we study radiative corrections which yield potentially large double logarithms, αsln2â¡L, for large enough medium length L. We show that these large corrections are universal and can be reabsorbed in a renormalization of the jet quenching parameter controlling both momentum broadening and energy loss. We argue that the probabilistic description of these phenomena remains valid, in spite of the large non-locality in time of the radiative corrections. The renormalized jet-quenching parameter is enhanced compared to its standard perturbative estimate. As a particular consequence, the radiative energy loss scales with medium size L as L2+γ, with γ=2αsNc/Ï, as compared to the standard scaling in L2.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Jean-Paul Blaizot, Yacine Mehtar-Tani,