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- W3120149550 abstract "A bstract First results on the radiative corrections of order $$ mathcal{O} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>O</mml:mi> </mml:math> ( N f α s α ) are presented for the off-shell production of W or Z bosons at the LHC, where N f is the number of fermion flavours. These corrections comprise all diagrams at $$ mathcal{O} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>O</mml:mi> </mml:math> ( α s α ) with closed fermion loops, form a gauge-invariant part of the next-to-next-to-leading-order corrections of mixed QCD×electroweak type, and are the ones that concern the issue of mass renormalization of the W and Z resonances. The occurring irreducible two-loop diagrams, which involve only self-energy insertions, are calculated with current standard techniques, and explicit analytical results on the electroweak gauge-boson self-energies at $$ mathcal{O} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>O</mml:mi> </mml:math> ( α s α ) are given. Moreover, the generalization of the complex-mass scheme for a gauge-invariant treatment of the W/Z resonances is described for the order $$ mathcal{O} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>O</mml:mi> </mml:math> ( α s α ). While the corrections, which are implemented in the Monte Carlo program R ady , are negligible for observables that are dominated by resonant W/Z bosons, they affect invariant-mass distributions at the level of up to 2% for invariant masses of ≳ 500 GeV and are, thus, phenomenologically relevant. The impact on transverse-momentum distributions is similar, taking into account that leading-order predictions to those distributions underestimate the spectrum." @default.
- W3120149550 created "2021-01-18" @default.
- W3120149550 creator A5043096879 @default.
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- W3120149550 date "2020-12-30" @default.
- W3120149550 modified "2023-09-25" @default.
- W3120149550 title "Mixed NNLO QCD×electroweak corrections of $$ mathcal{O} $$(Nfαsα) to single-W/Z production at the LHC" @default.
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- W3120149550 doi "https://doi.org/10.1007/jhep12(2020)201" @default.
- W3120149550 hasPublicationYear "2020" @default.
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