NNLO QCD study of polarised $W^{+}{W}^{-}$ production at the LHC

Abstract

Longitudinal polarisation of the weak bosons is a direct consequence of Electroweak symmetry breaking mechanism providing an insight into its nature, and is instrumental in searches for physics beyond the Standard Model. We perform a polarisation study of the diboson production in the $pp\to e^{+}{\nu }_e{\mu }^{-}{\bar{\nu }}_{\mu }$ process at NNLO QCD in the fiducial setup inspired by experimental measurements at ATLAS. This is the first polarisation study at NNLO. We employ the double-pole approximation framework for the polarised calculation, and investigate NNLO effects arising in differential distributions.

arXiv commentcorrected typos, added a reference, amended and clarified discussion with comments on top-quark loop effects, etc; matches JHEP published version

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• NNLO QCD corrections to diphoton production with an additional jet at the LHC
• Bell inequalities and quantum entanglement in weak gauge bosons production at the LHC and future colliders
• Event Generators for High-Energy Physics Experiments
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
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• NLO QCD corrections to polarised di-boson production in semi-leptonic final states
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• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• A first computation of three-loop master integrals for the production of two off-shell vector bosons with different masses
• Polarized-boson pairs at NLO in the SMEFT
• NLO EW and QCD corrections to polarized ZZ production in the four-charged-lepton channel at the LHC
• Threshold resummation for $W$-boson pair production at NNLO+NNLL