Anomalous coupling, top-mass and parton-shower effects in $W^{+}{W}^{-}$ production

Abstract

We calculate the process $pp\to W^{+}{W}^{-}\to e^{+}{\nu }_e{\mu }^{-}{\bar{\nu }}_{\mu }$ at NLO QCD, including also effective field theory (EFT) operators mediating the $gg{W}^{+}{W}^{-}$ interaction, which first occur at dimension eight. We further combine the NLO and EFT matrix elements produced by GoSam with the HERWIG7/MATCHBOX framework, which offers the possibility to study the impact of a parton shower. We assess the effects of the anomalous couplings by comparing them to top-mass effects as well as uncertainties related to variations of the renormalisation, factorisation and hard shower scales.

24 pages, 16 figures

References in corpus (15)

• Herwig++ Physics and Manual
• OneLOop: for the evaluation of one-loop scalar functions
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Search for high-mass diboson resonances with boson-tagged jets in proton-proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at sqrt(s) = 8 TeV
• Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV
• Limitations and Opportunities of Off-Shell Coupling Measurements
• Search for production of $WW/WZ$ resonances decaying to a lepton, neutrino and jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• NLO QCD corrections to WW+jet production at hadron colliders
• spinney: A Form Library for Helicity Spinors
• An Explanation of the WW Excess at the LHC by Jet-Veto Resummation
• NLO QCD and EW corrections to $WW$+jet production with leptonic $W$-boson decays at LHC
• Transverse-momentum resummation for vector-boson pair production at NNLL+NNLO
• Precision diboson measurements and the interplay of pT and jet-veto resummations

Cited by in corpus (2)

• New Physics in multi-Higgs boson final states
• Implementation of Angularly Ordered Electroweak Parton Shower in Herwig 7