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$W^+W^-$ production at the LHC: fiducial cross sections and distributions in NNLO QCD

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arxiv 1605.02716 v1 pith:WRMVAVFE submitted 2016-05-09 hep-ph

Massimiliano Grazzini (Zurich U.) , Stefan Kallweit (Santa Barbara , KITP , U. Mainz , PRISMA) , Stefano Pozzorini (Santa Barbara , Zurich U.) , Dirk Rathlev (DESY)
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Marius Wiesemann (Zurich U.)
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classification hep-ph
keywords fiducialnnlocrosspredictionscorrectionscutsdifferentialdistributions
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We consider QCD radiative corrections to $W^+W^-$ production at the LHC and present the first fully differential predictions for this process at next-to-next-to-leading order (NNLO) in perturbation theory. Our computation consistently includes the leptonic decays of the $W$ bosons, taking into account spin correlations, off-shell effects and non-resonant contributions. Detailed predictions are presented for the different-flavour channel $pp\to\mu^+e^-\nu_\mu {\bar \nu}_e+X$ at $\sqrt{s}=8$ and $13$ TeV. In particular, we discuss fiducial cross sections and distributions in the presence of standard selection cuts used in experimental $W^+W^-$ and $H\to W^+W^-$ analyses at the LHC. The inclusive $W^+W^-$ cross section receives large NNLO corrections, and, due to the presence of a jet veto, typical fiducial cuts have a sizeable influence on the behaviour of the perturbative expansion. The availability of differential NNLO predictions, both for inclusive and fiducial observables, will play an important role in the rich physics programme that is based on precision studies of $W^+W^-$ signatures at the LHC.

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Cited by 4 Pith papers

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  1. Dimension-8 operators in $W^+W^-$ production via gluon fusion

    hep-ph 2024-12 conditional novelty 7.0 of 10

    The full set of CP-even dimension-8 SMEFT amplitudes for gluon-fusion W+W- production is computed; their SM interference is shown to be negligible under EFT hierarchy, and new operator constraints are derived.

  2. 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.

  3. All planar three-loop Feynman integrals for the production of two vector bosons at hadron colliders

    hep-ph 2025-12 accept novelty 6.0 of 10

    All nine planar three-loop four-point integral families for two massive external legs are cast into canonical differential equations and evaluated numerically, completing the set needed for leading-colour N3LO diboson...

  4. Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist

    hep-ph 2025-04 unverdicted novelty 2.0 of 10

    The report reviews progress since 2021 in fixed-order computations for LHC applications and identifies processes requiring missing higher-order corrections to match anticipated experimental precision.

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