NNLO QCD study of polarised $W^+ W^-$ production at the LHC
Rene Poncelet, Andrei Popescu
TL;DR
This paper presents the first NNLO QCD analysis of polarised W+W- production at the LHC, providing detailed insights into electroweak symmetry breaking and aiding searches for new physics.
Contribution
It introduces the first NNLO QCD polarisation study of diboson production, using the double-pole approximation in a fiducial setup aligned with experimental conditions.
Findings
NNLO effects significantly impact differential distributions.
Polarisation observables are sensitive to electroweak symmetry breaking.
The study enhances precision in diboson measurements 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 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.
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