Phenomenological studies of top-pair production at Next-to-Leading order

TL;DR

This paper presents next-to-leading order QCD calculations for top-antitop production and decay, including off-shell effects, providing detailed cross sections and distributions relevant for TeVatron and LHC experiments.

Contribution

It offers the first comprehensive NLO QCD analysis of top-pair production with full off-shell effects using the HELAC-NLO framework.

Findings

Total cross sections and scale dependence analyzed

Differential distributions at TeVatron and LHC provided

Results obtained with HELAC-NLO Monte Carlo framework

Abstract

The calculation of NLO QCD corrections to the $t\bar{t}\to W^{+}W^{-}b\bar{b}\to e^{+}\nu_e \mu^{-}\bar{\nu}_{\mu}b\bar{b}$ process with complete off-shell effects, is briefly summarized. Besides the total cross section and its scale dependence, a few differential distributions at the TeVatron run II and LHC are given. All results presented in this contribution have been obtained with the help of the HELAC-NLO Monte Carlo framework.