NNLL threshold resummation for top-pair and single-top production
Abstract
I discuss threshold resummation at NNLL accuracy in the standard moment-space approach in perturbative QCD for top-pair and single-top production. For top quark pair production I present new approximate NNLO results for the total cross section and for the top quark transverse momentum and rapidity distributions at 8 TeV LHC energy. I discuss the accuracy of the soft-gluon approximation and show that the NLO and NNLO approximate results from resummation are practically indistinguishable from exact NLO and partial NNLO results. For single top production I present new approximate NNLO results for the total cross sections in all three channels at the LHC and also for the top quark transverse momentum distributions in t-channel production and in top-quark associated production with a W boson. For both ttbar and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent.
Keywords
Cite
@article{arxiv.1210.7813,
title = {NNLL threshold resummation for top-pair and single-top production},
author = {Nikolaos Kidonakis},
journal= {arXiv preprint arXiv:1210.7813},
year = {2014}
}
Comments
13 pages, 6 figures; invited paper for a special issue on "Path Dependence" in Particles and Nuclei; v2 has two new plots and added text