Department
Physics
Document Type
Article
Publication Date
7-1-2014
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 tt¯ and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent.
Journal Title
Physics of Particles and Nuclei
Journal ISSN
1531-8559
Volume
45
Issue
4
First Page
714
Last Page
722
Digital Object Identifier (DOI)
10.1134/S1063779614040091
