Radiative corrections to W gamma gamma production at the LHC

Abstract

Radiative W production at hadron colliders is an important testing ground for the Standard Model. We consider W γγ production which is sensitive to the quartic WW γγ coupling. Furthermore the Standard Model amplitude for this process contains a radiation zero. We present a calculation of the NLO QCD corrections for W γγ production at the LHC.

Precision Multiboson Phenomenology

“…In all cases, leptonic decays of the electroweak bosons were included in the calculations. For the production of three weak bosons and also for W ± γγ, these results were verified against independent calculations 9,10,11 which are available for on-shell bosons and neglecting Higgs boson exchange.…”

“…In Ref. 2 (see also 11 ), it was shown that this is due to cancellations at LO driven by a radiation zero 22 . The radiation zero at NLO is obscured, similar to W ± γ production 25 , by additional real QCD radiation, W ± γγ +jet, as part of the NLO contributions.…”

Next-to-leading order QCD corrections to $$W\gamma $$ W γ production in association with two jets

“…[7][8][9][10][11][12] and are available via the VBFNLO program [13] (see also Refs. [14][15][16] for on-shell production and Ref. [17] for NLO EW corrections).…”

Parton-shower matching systematics in vector-boson-fusion WW production

“…These properties allow us to distinguish VBF from two types of background processes with the same final state. At the same order in the coupling constants, di-boson or tri-boson production, where one of the bosons decays hadronically, contributes [12][13][14][15][16][17][18][19][20][21]. For these processes, the invariant mass of the two jets is close to the mass of the decaying boson, and larger values are strongly suppressed.…”