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 → \( {\mathrm{e}}^{+}{v}_{\mathrm{e}}{\mu}^{-}{\overline{v}}_{\mu } \) 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.
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Poncelet, R., Popescu, A. NNLO QCD study of polarised W+W− production at the LHC. J. High Energ. Phys. 2021, 23 (2021). https://doi.org/10.1007/JHEP07(2021)023
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DOI: https://doi.org/10.1007/JHEP07(2021)023