NLO QCD corrections to W+ W+ jj production in vector-boson fusion at the LHC

TL;DR

This paper provides a detailed NLO QCD calculation for W+ W+ jj production via vector-boson fusion at the LHC, including electroweak diagrams and interference effects, with results showing corrections below 10%.

Contribution

It introduces a comprehensive NLO QCD calculation for same-sign W boson scattering in VBF, incorporating complete electroweak diagrams and interference effects, implemented in a flexible Monte Carlo generator.

Findings

QCD corrections are below 10% for all observables.

Residual scale dependence is approximately 1%.

Complete electroweak diagrams and interference effects are included.

Abstract

We present a next-to-leading-order QCD calculation for e+\nu e\mu+\nu\mu jj production in vector-boson fusion, i.e. the scattering of two positively charged W bosons at the LHC. We include the complete set of electroweak leading-order diagrams for the six-particle final state and quantitatively assess the size of the s-channel and interference contributions in VBF kinematics. The calculation uses the complex-mass scheme to describe the W-boson resonances and is implemented into a flexible Monte Carlo generator. Using a dynamical scale based on the transverse momenta of the jets, the QCD corrections stay below about 10% for all considered observables, while the residual scale dependence is at the level of 1%.