Soft-gluon resummations and NNNLO expansions
arXiv:1309.1442
Abstract
I discuss the effectiveness of soft-gluon resummations in describing higher-order corrections. I present a comparison of recent resummation approaches and their relative successes in approximating complete NNLO corrections. I also discuss fixed-order expansions through NNNLO and present some recent applications to QCD hard-scattering processes, including top-antitop pair production, single-top production, and W production at large transverse momentum.
7 pages, 7 figures; presented at EPS-HEP 2013, Stockholm, Sweden, July 18-24, 2013
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- Parton distributions for the LHC
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- Two-loop soft anomalous dimensions and NNLL resummation for heavy quark production
- The top quark rapidity distribution and forward-backward asymmetry
- Top-quark transverse-momentum distributions in t-channel single-top production
- Theoretical results for top quark production