NNLL threshold resummation for top-pair and single-top production

作者：Kidonakis Nikolaos^*

来源：Physics of Particles and Nuclei, 2014, 45(4): 714-722.

DOI：10.1134/S1063779614040091

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 and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent.

• 出版日期2014-7