Erratum: Exact Top-Quark Mass Dependence in Hadronic Higgs Production [Phys. Rev. Lett. 127, 162002 (2021)].

This corrects the article DOI: 10.1103/PhysRevLett.127.162002.

Exact Top-Quark Mass Dependence in Hadronic Higgs Production.

The impact of the finite top-quark mass on the inclusive Higgs production cross section at higher perturbative orders has been an open question for almost three decades. In this Letter, we report on the computation of this effect at next-to-next-to-leading order QCD. For the purely gluonic channel, it amounts to +0.62% relative to the result obtained in the Higgs effective field theory approximation. The formally subleading partonic channels overcompensate this shift, leading to an overall effect of -0.26% at a pp collider energy of 13 TeV, and -0.1% at 8 TeV. This result eliminates one of the main theoretical uncertainties to inclusive Higgs production cross section at the LHC.

Exploiting the WH/ZH symmetry in the search for new physics.

We suggest to isolate the loop-induced gluon-initiated component ( g g → Z H ) for associated ZH production by using the similarity of the Drell-Yan-like component for ZH production to the WH process. We argue that the cross-section ratio of the latter two processes can be predicted with high theoretical accuracy. Comparing it to the experimental Z H / W H cross-section ratio should allow to probe for new physics in the g g → Z H component at the HL-LHC. We consider typical BSM scenarios in order to exemplify the effect they would have on the proposed observable.

Higgs boson mass in supersymmetry to three loops.

Within the minimal supersymmetric extension of the standard model, the mass of the light CP-even Higgs boson is computed to three-loop accuracy, taking into account the next-to-next-to-leading order effects from supersymmetric quantum chromodynamics. We consider two different scenarios for the mass hierarchies of the supersymmetric spectrum. Our numerical results amount to corrections of about 500 MeV, which is of the same order as the experimental accuracy expected at the CERN Large Hadron Collider.