Probing triple Higgs couplings of the Two Higgs Doublet Model at Linear Collider

Abstract

We study double Higgs production at the future Linear Collider in the framework of the Two Higgs Doublet Models through the following channels: $e^{+}{e}^{-}\to {\Phi }_i{\Phi }_{j}Z$, ${\Phi }_i=h^0,H^0,A^0,H^{\pm }$. All these processes are sensitive to triple Higgs couplings. Hence observations of them provide information on the triple Higgs couplings that help reconstructing the scalar potential. We also discuss the double Higgs-strahlung $e^{+}{e}^{-}\to h^0{h}^{0}Z$ in the decoupling limit where $h^0$ mimics the SM Higgs boson. The processes $e^{+}{e}^{-}\to h^0{h}^{0}Z$ and $e^{+}{e}^{-}\to h^0{H}^{0}Z$ are also discussed in the fermiophobic limit where distinctive signatures such as $4\gamma +X$, $2\gamma +X$ and $6\gamma +X$ are expected in the Type-I Two Higgs Doublet Model.

21 pages and 9 figures; one figure and some discussions added, version to appear in PRD

References in corpus (5)

• Constraining the Two-Higgs-Doublet-Model parameter space
• Different kind of textures of Yukawa coupling matrices in the two Higgs doublet model type III
• Triple Higgs boson production in the Linear Collider
• Excursions into FeynArts and FormCalc
• Vector-Boson Production of Light Higgs Pairs in 2-Higgs Doublet Models

Cited by in corpus (8)

• Higgs boson pair production in new physics models at hadron, lepton, and photon colliders
• Trilinear Higgs couplings in the two Higgs doublet model with CP violation
• Pair production of neutral Higgs bosons from the left-right twin Higgs model at the ILC and LHC
• Pair Production of Two-Higgs-Doublet_Model Light Higgs Bosons in $\gamma \gamma$ Collisions
• Neutral Higgs boson pair production in photon-photon annihilation in the Two Higgs Doublet Model
• Pair production of Higgs bosons associated with $Z$ boson in the left-right twin Higgs model at the ILC
• Same sign trilepton as signature of charged Higgs in two Higgs doublet model
• Sensitivity to Triple Higgs Couplings via Di-Higgs Production in the 2HDM at e+e- Colliders