NNLL threshold resummation for top-pair and single-top production |
| |
Authors: | Nikolaos Kidonakis |
| |
Institution: | 1. Kennesaw State University, Physics #1202, 1000 Chastain Rd., Kennesaw, GA, 30144-5591, USA
|
| |
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 \(t\bar t\) and single-top production the agreement of theoretical results with LHC and Tevatron data is excellent. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|