کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8183204 | 1527095 | 2014 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Renormalization of the jet-quenching parameter
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Renormalization of the jet-quenching parameter Renormalization of the jet-quenching parameter](/preview/png/8183204.png)
چکیده انگلیسی
We study the radiative processes that affect the propagation of a high energy gluon in a dense medium, such as a quark-gluon plasma. In particular, we investigate the role of the large double logarithmic corrections, â¼Î±sln2L/Ï0, that were recently identified in the study of pâ¥-broadening by Liou, Mueller and Wu. We show that these large corrections 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 929, September 2014, Pages 202-229
Journal: Nuclear Physics A - Volume 929, September 2014, Pages 202-229
نویسندگان
Jean-Paul Blaizot, Yacine Mehtar-Tani,