One-loop weak corrections to Higgs production

Abstract

We compute mixed QCD-weak corrections to inclusive Higgs production at the LHC from the partonic process $gg\to Hq\bar{q}$. We start from the UV- and IR-finite one-loop weak amplitude and consider its interference with the corresponding one-loop QCD amplitude. This contribution is a $\mathcal{O}({\alpha }_s\alpha )$ correction to the leading-order gluon-fusion cross section, and was not numerically assessed in previous works. We also compute the cross section from the square of this weak amplitude, suppressed by $\mathcal{O}({\alpha }^2)$. Finally, we consider contributions from the partonic process $gq\to Hq$, which are one order lower in ${\alpha }_s$, as a reference for the size of terms which are not enhanced by the large gluon luminosity. We find that, given the magnitude of the uncertainties on current state-of-the-art predictions for Higgs production, all contributions computed in this work can be safely ignored, both fully inclusively and in the boosted Higgs regime. This result supports the approximate factorisation of QCD and weak corrections to that process.

27 pages, analytic expression in ancillary material

References in corpus (25)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations
• Higgs boson gluon-fusion production in N3LO QCD
• NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders
• Automation of one-loop QCD corrections
• Two-loop light fermion contribution to Higgs production and decays
• Kira - A Feynman Integral Reduction Program
• OneLOop: for the evaluation of one-loop scalar functions
• Dimensionally Regulated One-Loop Integrals
• The automation of next-to-leading order electroweak calculations
• Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion
• NNLO Computational Techniques: the Cases H -> gamma gamma and H -> g g
• Higgs Boson Production at Hadron Colliders at N3LO in QCD
• Two-loop electroweak corrections to Higgs production at hadron colliders
• Ninja: Automated Integrand Reduction via Laurent Expansion for One-Loop Amplitudes
• Facts of life with gamma(5)
• NNLO QCD corrections to Higgs boson production at large transverse momentum
• Higher order corrections to mixed QCD-EW contributions to Higgs production in gluon fusion
• Subtraction with hadronic initial states at NLO: an NNLO-compatible scheme
• Electroweak and finite quark-mass effects on the Higgs boson transverse momentum distribution
• Gluon-Induced Weak Boson Fusion
• Tensor integrand reduction via Laurent expansion
• Three-loop mixed QCD-electroweak corrections to Higgs boson gluon fusion
• Mixed QCD-electroweak corrections to Higgs production via gluon fusion in the small mass approximation

Cited by in corpus (5)

• Collider Physics at the Precision Frontier
• NLO Corrections to Light-Quark Mixed QCD-EW Contributions to Higgs Production
• Local analytic sector subtraction for initial- and final-state radiation at NLO in massless QCD
• Two-loop amplitude for mixed QCD-EW corrections to $gg\to Hg$
• Two-loop mixed QCD-EW corrections to $q\overline{q}\to Hg$, $qg\to Hq$, and $\overline{q}g\to H\overline{q}$