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Soft-gluon corrections for $tqZ$ production

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arxiv 2210.09542 v1 pith:K7MU7GFG submitted 2022-10-18 hep-ph

Nikolaos Kidonakis , Nodoka Yamanaka This is my paper · ORCID
classification hep-ph
keywords correctionsproductionsoft-gluonannlocalculatecrossdistributionssection
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abstract

We study soft-gluon corrections for the associated production of a single top quark and a $Z$ boson ($tqZ$ production) at hadron colliders. We find that the radiative corrections are dominated by soft-gluon emission. We calculate the approximate NNLO (aNNLO) cross section at LHC energies, including uncertainties from scale dependence and from parton distributions. We also calculate differential distributions in top-quark rapidity. We show that the aNNLO corrections are significant and they enhance the NLO cross section while decreasing theoretical uncertainties.

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  1. N$^3$LO soft-gluon corrections for $Z\gamma$ production

    hep-ph 2026-08 conditional novelty 4.0 of 10

    The authors derive N3LO soft-gluon corrections for Z gamma production and present approximate N3LO LHC predictions for photon pT and rapidity distributions.

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