Merging WW and WW+jet with MINLO

Abstract

We present a simulation program for the production of a pair of W bosons in association with a jet, that can be used in conjunction with general-purpose shower Monte Carlo generators, according to the POWHEG method. We have further adapted and implemented the MINLO' method on top of the NLO calculation underlying our WW+jet generator. Thus, the resulting simulation achieves NLO accuracy not only for inclusive distributions in WW+jet production but also WW production, i.e. when the associated jet is not resolved, without the introduction of any unphysical merging scale. This work represents the first extension of the MINLO' method, in its original form, to the case of a genuine underlying 2->2 process, with non-trivial virtual corrections.

arXiv comment22 pages, 9 figures

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• MiNNLO${}_{\text{PS}}$: A new method to match NNLO QCD to parton showers
• An NLO QCD effective field theory analysis of $W_{}^{+}{W}_{}^{-}$ production at the LHC including fermionic operators
• Measurement of fiducial and differential $W^{+}{W}^{-}$ production cross-sections at $\sqrt{s}=$13 TeV with the ATLAS detector
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• NLO Effects in EFT Fits to $W^{+}{W}^{-}$ Production at the LHC
• Anomalies in Particle Physics
• The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale
• NLO QCD+NLO EW corrections to diboson production matched to parton shower
• Advancing MiNNLO${}_{\mathrm{PS}}$ to diboson processes: $Z\gamma$ production at NNLO+PS
• Measurements of $W^{+}{W}^{-}+\ge 1$jet production cross-sections in $pp$ collisions at $\sqrt{s}=13$TeV with the ATLAS detector
• $W^{+}{W}^{-}$ production at NNLO+PS with MiNNLO${}_{\mathrm{PS}}$
• Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections
• Monte Carlo simulations of Higgs-boson production at the LHC with the KrkNLO method
• MINLO t-channel single-top plus jet
• Electroweak, QCD and flavour physics studies with ATLAS data from Run 2 of the LHC
• Threshold resummation for $W$-boson pair production at NNLO+NNLL