Probing Higgs self-coupling of a classically scale invariant model in $e^{+}{e}^{-}\to Zhh$: Evaluation at physical point

Abstract

A classically scale invariant extension of the standard model predicts large anomalous Higgs self-interactions. We compute missing contributions in previous studies for probing the Higgs triple coupling of a minimal model using the process $e^{+}{e}^{-}\to Zhh$. Employing a proper order counting, we compute the total and differential cross sections at the leading order, which incorporate the one-loop corrections between zero external momenta and their physical values. Discovery/exclusion potential of a future $e^{+}{e}^{-}$ collider for this model is estimated. We also find a unique feature in the momentum dependence of the Higgs triple vertex for this class of models.

14 pages, 7 figures; Version to appear in Phys. Lett. B

References in corpus (10)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Gauge Singlet Scalars as Cold Dark Matter
• First Dark Matter Search Results from the XENON1T Experiment
• Observation of the diphoton decay of the Higgs boson and measurement of its properties
• Measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ channels with the ATLAS detector using 25 fb${}^{-1}$ of $pp$ collision data
• Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for the associated production of the Higgs boson with a top-quark pair
• Right-Handed Neutrinos as the Origin of the Electroweak Scale
• Model-Independent Determination of the Triple Higgs Coupling at $e^{+}{e}^{-}$ Colliders
• Study of Electroweak Vacuum Stability from Extended Higgs Portal of Dark Matter and Neutrinos

Cited by in corpus (2)

• Two-loop analysis of classically scale-invariant models with extended Higgs sectors
• Electroweak phase transition in the nearly aligned Higgs effective field theory