NLO QCD corrections to top quark pair production and decay at hadron colliders

TL;DR

This paper calculates next-to-leading order QCD corrections for top quark pair production and decay at hadron colliders, including spin correlations, using generalized D-dimensional unitarity, enabling detailed collider studies.

Contribution

It introduces a numerical implementation for NLO QCD corrections to top pair production and decay with spin correlations at hadron colliders.

Findings

Provides a computational tool for ttbar observables at Tevatron and LHC.

Includes all spin correlations in NLO QCD calculations.

Facilitates precise theoretical predictions for top quark physics.

Abstract

We present results for the next-to-leading order QCD corrections to the production and semi-leptonic decays of a top quark pair in hadron collisions, retaining all spin correlations. To evaluate the virtual corrections, we employ generalized D-dimensional unitarity. The computation is implemented in a numerical program which allows detailed studies of ttbar-related observables at the Tevatron and the LHC.