Two-loop soft anomalous dimensions with massive and massless quarks
arXiv:0910.0473
Abstract
I present results for two-loop soft anomalous dimensions, which are derived from dimensionally regularized diagrams with eikonal quark lines and control soft-gluon emission in hard-scattering processes. Detailed results for the UV poles of the eikonal integrals are shown for massive quarks, and the massless limit is also taken. The construction of soft anomalous dimensions at two-loops allows soft-gluon resummations at NNLL accuracy.
8 pages, 6 figures; to be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726
References in corpus (5)
- The theoretical top quark cross section at the Tevatron and the LHC
- Two-loop soft anomalous dimensions and NNLL resummation for heavy quark production
- The Massive Soft Anomalous Dimension Matrix at Two Loops
- Collinear and soft gluon corrections to Higgs production at NNNLO
- Higher-order corrections to top-antitop pair and single top quark production