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- W4366823612 abstract "We present the first calculation for the hadroproduction of a $W$ boson in association with a massive bottom ($b$) quark-antiquark pair at next-to-next-to-leading order (NNLO) in QCD perturbation theory. We exploit the hierarchy between the $b$ quark mass and the characteristic energy scale of the process to obtain a reliable analytic expression for the two-loop virtual amplitude with three massive legs, starting from the corresponding result available for massless bottom quarks. The use of massive $b$ quarks avoids the ambiguities associated with the correct flavour assignment in massless calculations, paving the way to a more realistic comparison with experimental data. We present phenomenological results considering proton-proton collisions at centre-of-mass energy $sqrt{s}=13.6$ TeV for inclusive $Wb bar b$ production and within a fiducial region relevant for the associated production of a $W$ boson and a Higgs boson decaying into a $b bar b$ pair, for which $Wb bar b$ production represents one of the most relevant backgrounds. We find that the NNLO corrections are substantial and that their inclusion is mandatory to obtain reliable predictions." @default.
- W4366823612 created "2023-04-25" @default.
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- W4366823612 date "2023-04-24" @default.
- W4366823612 modified "2023-10-14" @default.
- W4366823612 title "Associated production of a <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>W</mml:mi></mml:math> boson and massive bottom quarks at next-to-next-to-leading order in QCD" @default.
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- W4366823612 doi "https://doi.org/10.1103/physrevd.107.074032" @default.
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