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Polarised W+j production at the LHC: a study at NNLO QCD accuracy

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arxiv 2109.14336 v3 pith:MZ34ZPPK submitted 2021-09-29 hep-ph hep-ex

classification hep-phhep-ex
keywords nnlopolarisationaccuracyfiducialfractionsphasepolarisedapproximation
verification ladder T0 review T1 audit T2 compute T3 formal

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We study polarisation of W-bosons produced in association with one jet at the LHC. In particular, we provide all necessary theoretical ingredients for the precise extraction of polarisation fractions. To that end, we present new polarised predictions up to NNLO QCD accuracy employing the narrow-width approximation, in two phase spaces: inclusive and fiducial. We compare results in the fiducial phase space to a full off-shell computation as well as experimental data. Finally, we fit the polarisation fractions using shape templates and show that NNLO corrections significantly improve their determination.

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Cited by 1 Pith paper

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  1. Precise Standard-Model predictions for polarised Z-boson pair production and decay at the LHC

    hep-ph 2025-05 conditional novelty 7.0 of 10

    The authors deliver the first NNLO QCD plus NLO EW combination of predictions for polarised ZZ pairs at the LHC and validate them across five Monte Carlo codes and against ATLAS simulations.

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