Generalized unitarity at work: first NLO QCD results for hadronic W+3jet production

TL;DR

This paper demonstrates the first application of generalized unitarity to compute NLO QCD corrections for W+3 jet production at colliders, showing promising results for complex one-loop calculations.

Contribution

It introduces the use of generalized unitarity for realistic NLO calculations of W+3 jet production, a novel application in high-energy physics.

Findings

Successful computation of NLO QCD corrections for W+3 jet production

First application of generalized unitarity in a realistic one-loop calculation

Method shows good performance and potential for future complex calculations

Abstract

We compute the leading color, next-to-leading order QCD corrections to the dominant partonic channels for the production of a W boson in association with three jets at the Tevatron and the LHC. This is the first application of generalized unitarity for realistic one-loop calculations. The method performs well in this non-trivial test and offers great promise for the future.