Next-to-leading order QCD predictions for W+W+jj production at the LHC

TL;DR

This paper presents next-to-leading order QCD calculations for W+W+jj production at the LHC, improving the accuracy of cross-section predictions and analyzing jet characteristics to aid in signal detection and background rejection.

Contribution

It provides the first NLO QCD predictions for the QCD-mediated W+W+jj process at the LHC, reducing theoretical uncertainties and analyzing jet features.

Findings

NLO corrections reduce scale dependence to about ±10%.

A significant number of events contain a hard third jet.

Jet analysis can help distinguish signal from background.

Abstract

Because the LHC is a proton-proton collider, sizable production of two positively charged W-bosons in association with two jets is possible. This process leads to a distinct signature of same sign high-pt leptons, missing energy and jets. We compute the NLO QCD corrections to the QCD-mediated part of pp -> W+W+jj. These corrections reduce the dependence of the production cross-section on the renormalization and factorization scale to about +- 10 percent. We find that a large number of W+W+jj events contain a relatively hard third jet. The presence of this jet should help to either pick up the W+W+jj signal or to reject it as an unwanted background.