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arxiv 2103.06225 v1 pith:F6TT2Y4B submitted 2021-03-10 hep-ph

Virtual corrections to ggto ZH via a transverse momentum expansion

classification hep-ph
keywords crosssectionbosoncorrectionsexpansionmethodmomentumpartonic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We compute the next-to-leading virtual QCD corrections to the partonic cross section of the production of a Higgs boson in association with a $Z$ boson in gluon fusion. The calculation is based on the recently introduced method of evaluating the amplitude via an expansion in terms of a small transverse momentum. We generalize the method to the case of different masses in the final state and of a process not symmetric in the forward-backward direction exchange. Our analytic approach gives a very good approximation (better than percent) of the partonic cross section in the center of mass energy region up to $\sim 750 \,\textrm{GeV}$, where at the LHC $\sim 98\%$ of the total hadronic cross section is concentrated.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Planar master integrals for two-loop NLO electroweak light-fermion contributions to $g g \rightarrow Z H$

    hep-ph 2026-04 unverdicted novelty 6.0

    Analytic expressions for the planar master integrals in two-loop NLO EW light-fermion contributions to gg → ZH are derived via canonical differential equations and expressed using Goncharov polylogarithms or one-fold ...

  2. ggxy: Fast and flexible NLO QCD corrections to gluon-initiated processes

    hep-ph 2026-07 conditional novelty 5.0

    The ggxy library implements NLO QCD corrections for gg→ZH and gg→ZZ with full top-quark mass dependence using high-energy and forward-limit expansions, validated against existing results and interfaced to POWHEG for p...

  3. Associated $ZH$ production in gluon fusion process at NLO+NLL

    hep-ph 2026-05 unverdicted novelty 5.0

    NLO+NLL QCD corrections to gluon-fusion ZH production increase the cross-section by ~20% and reduce scale uncertainties from 20% to 12% at LHC energies, combined with Drell-Yan N3LL results.