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The $n_{f}$ terms of the three-loop cusp anomalous dimension in QCD

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 نشر من قبل Johannes Henn
 تاريخ النشر 2014
  مجال البحث
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In this talk we present the result for the $n_f$ dependent piece of the three-loop cusp anomalous dimension in QCD. Remarkably, it is parametrized by the same simple functions appearing in analogous anomalous dimensions in ${mathcal N}=4$ SYM at one and two loops. We also compute all required master integrals using a recently proposed refinement of the differential equation method. The analytic results are expressed in terms of harmonic polylogarithms of uniform weight.

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