Exploring sizable triple Higgs couplings in the 2HDM

Abstract

An important task at future colliders is the measurement of the triple Higgs coupling. Depending on its size relative to the Standard Model (SM) value, certain collider options result in a higher experimental accuracy. Within the framework of Two Higgs Doublet Models (2HDM) type I and II we investigate the allowed ranges for all triple Higgs couplings involving at least one light, SM-like Higgs boson. We take into account theoretical constraints (unitarity, stability), experimental constraints from direct Higgs-boson searches, measurements of the SM-like Higgs-boson properties, flavor observables and electroweak precision data. We find that the SM-type triple Higgs coupling w.r.t. its SM value, ${\lambda }_{hhh}/{\lambda }_{\mathrm{SM}}$, can range between $\sim -0.5$ and $\sim 1.5$. Depending on which value is realized, the HL-LHC can compete with, or is clearly inferior to the ILC. We find the coupling ${\lambda }_{hhH}$ between $\sim -1.5$ and $\sim 1.5$. Triple Higgs couplings involving two heavy Higgs bosons, ${\lambda }_{hHH}$, ${\lambda }_{hAA}$ and ${\lambda }_{h{H}^{+}{H}^{-}}$ can reach values up to $\mathcal{O}(10)$, roughly independent of the 2HDM type. This can lead to potentially strongly enhanced production of two Higgs-bosons at the HL-LHC or high-energy $e^{+}{e}^{-}$ colliders.

arXiv comment44 pages, 16 figures

References in corpus (33)

• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Theory and phenomenology of two-Higgs-doublet models
• HiggsBounds: Confronting Arbitrary Higgs Sectors with Exclusion Bounds from LEP and the Tevatron
• HiggsBounds-4: Improved Tests of Extended Higgs Sectors against Exclusion Bounds from LEP, the Tevatron and the LHC
• HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
• HiggsBounds 2.0.0: Confronting Neutral and Charged Higgs Sector Predictions with Exclusion Bounds from LEP and the Tevatron
• 2HDMC - Two-Higgs-Doublet Model Calculator
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• Note on tree-level unitarity in the General Two Higgs Doublet Model
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• Higgs Boson Studies at Future Particle Colliders
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC
• Applying Exclusion Likelihoods from LHC Searches to Extended Higgs Sectors
• A precision constraint on multi-Higgs-doublet models
• Higgs pair production at the LHC with NLO and parton-shower effects
• Metastability bounds on the two Higgs doublet model
• Status of the Charged Higgs Boson in Two Higgs Doublet Models
• A strong electroweak phase transition in the 2HDM after LHC8
• Echoes of the Electroweak Phase Transition: Discovering a second Higgs doublet through $A_0\to H_{0}Z$
• Flavor constraints on the Two Higgs Doublet Models of $Z_2$ symmetric and aligned types
• A global view on the Higgs self-coupling at lepton colliders
• Scalar sector of Two-Higgs-Doublet models: A mini-review
• Benchmarks for Higgs Pair Production and Heavy Higgs Searches in the Two-Higgs-Doublet Model of Type II
• The Higgs Vacuum Uplifted: Revisiting the Electroweak Phase Transition with a Second Higgs Doublet
• Constraining new physics from Higgs measurements with Lilith: update to LHC Run 2 results
• Two Higgs Doublet Models and $b\to s$ exclusive decays
• What the Oblique Parameters S, T, and U and Their Extensions Reveal About the 2HDM: A Numerical Analysis
• Measuring the 2HDM Scalar Potential at LHC14
• LHC Search of New Higgs Boson via Resonant Di-Higgs Production with Decays into 4W
• Revisiting $B_s\to {\mu }^{+}{\mu }^{-}$ in the two-Higgs doublet models with $Z_2$ symmetry
• Theoretical Analysis of Discreteness-Induced Transition in Autocatalytic Reaction Dynamics
• Improved unitarity constraints in Two-Higgs-Doublet-Models

Cited by in corpus (22)

• Benchmarking Di-Higgs Production in Various Extended Higgs Sector Models
• Global fits in the Aligned Two-Higgs-Doublet model
• Cornering the Two Higgs Doublet Model Type II
• New constraints on extended Higgs sectors from the trilinear Higgs coupling
• Two-Higgs-doublet models in light of current experiments: a brief review
• Possibility of multi-step electroweak phase transition in the two Higgs doublet models
• Probing triple Higgs coupling with machine learning at the LHC
• Triple Higgs Couplings in the 2HDM: The Complete Picture
• Updated global fit of the aligned two-Higgs-doublet model with heavy scalars
• Sensitivity and constraints to the 2HDM soft-breaking $Z_2$ parameter $m_{12}$
• Comparative Studies of 2HDMs under the Higgs Boson Precision Measurements
• BSM patterns in scalar-sector coupling modifiers
• Sensitivity to Triple Higgs Couplings via Di-Higgs Production in the 2HDM at e+e- Colliders
• Interpretations of the ATLAS measurements of Higgs boson production and decay rates and differential cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV
• A model with vectorlike fermions and $U(1{)}_X$ symmetry: CKM unitarity, $b\to s$ transitions, and prospect at Belle II
• Maximal value for trilinear Higgs coupling in a 3-3-1 EFT
• Two-Higgs-Doublet Model and Quark-Lepton Unification
• Fine-Tuning in the 2HDM
• Generalized angular-order parton showers in Herwig 7
• Natural 2HDMs without FCNCs
• Role of ${\lambda }_{h{H}^{+}{H}^{-}}$ in Higgs boson decays $h$ to $bs$ in the 2HDM
• Two Higgs doublet model fitting and $t\bar{t}b\bar{b}$ signal at the ILC