Higgs boson production in association with a jet at next-to-next-to-leading order

TL;DR

This paper provides the first complete NNLO QCD predictions for Higgs boson production with a jet, significantly improving theoretical accuracy and convergence for LHC phenomenology.

Contribution

It presents the first full NNLO calculation for Higgs plus jet production in hadronic collisions within the Higgs Effective Field Theory.

Findings

NNLO predictions reduce scale dependence by over 50%

Total cross section increases by approximately 20% over NLO

Demonstrates satisfactory convergence of the perturbative series

Abstract

We present precise predictions for Higgs boson production in association with a jet. Our calculation is accurate to next-to-next-to-leading order (NNLO) QCD in the Higgs Effective Field Theory and constitutes the first complete NNLO computation for Higgs production with a final-state jet in hadronic collisions. We include all relevant phenomenological channels and present fully-differential results as well as total cross sections for the LHC. Our NNLO predictions reduce the unphysical scale dependence by more than a factor of two and enhance the total rate by about twenty percent compared to NLO QCD predictions. Our results demonstrate for the first time satisfactory convergence of the perturbative series.