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

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arxiv 1210.7813 v2 pith:H633EUFJ submitted 2012-10-29 hep-ph

Nikolaos Kidonakis This is my paper · ORCID
classification hep-ph
keywords productionresultsnnloapproximatequarkresummationsingle-topaccuracy
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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