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An NLO QCD effective field theory analysis of $W^+_{}W^-_{}$ production at the LHC including fermionic operators

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arxiv 1708.03332 v2 pith:WLSVMFCV submitted 2017-08-10 hep-ph

Julien Baglio , Sally Dawson , Ian M. Lewis This is my paper
classification hep-ph
keywords productionanomalousbosoncorrectionscouplingsdemonstrateeffectiveeffects
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study the impact of anomalous gauge boson and fermion couplings on the production of $W^+W^-$ pairs at the LHC. Helicity amplitudes are presented separately to demonstrate the sources of new physics contributions and the impact of QCD and electroweak corrections. The QCD corrections have important effects on the fits to anomalous couplings, in particular when one $W$ boson is longitudinally polarized and the other is transversely polarized. In effective field theory language, we demonstrate that the dimension-6 approximation to constraining new physics effects in $W^+W^-$ pair production fails at $p_T\sim 500-1000$ GeV.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Anomalous triple gauge couplings in the light of dimension-8 operators in $W^+W^-$

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Bosonic dimension-8 operators in γγ-initiated WW production dominate over qqbar and set the practical EFT validity scale, yielding validity-aware constraints on dimension-6 Wilson coefficients.

  2. Matrix element method at NLO: A fine proof of concept in POWHEG

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    Proof-of-concept for NLO matrix element method via POWHEG projections applied to fully leptonic WW production in SMEFT, demonstrating near-optimal classification of BSM versus SM events using lepton correlations.

  3. Flavor constraints from $pp\to Vh$ and $pp\to VW$ at the LHC

    hep-ph 2025-09 conditional novelty 6.0 of 10

    LHC data on pp→Vh and pp→VW yield general-flavor SMEFT constraints that will become competitive with flavor tests of the Cabibbo-angle anomaly at the HL-LHC.

  4. Electroweak Restoration: SMEFT and HEFT

    hep-ph 2026-05 unverdicted novelty 5.0 of 10

    High-energy amplitude ratios for longitudinal di-boson production approach unity in the SM and dimension-6 SMEFT but not necessarily in HEFT, making the W±_L Z_L to W±_L h cross section ratio a promising discriminator...

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