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

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- p ⊥ 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.