Probing triple Higgs couplings of the two Higgs doublet model at a linear collider

2008/02/29 by Abdesslam Arhrib, Rachid Benbrik, Cheng-Wei Chiang
Physics and Astronomy · #Boson #Collider #Geometry #Higgs boson #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Scalar (mathematics) #Standard Model (mathematical formulation) #Two-Higgs-doublet model #hep-ph

paper · pdf · doi:10.1103/physrevd.77.115013

published as Phys.Rev.D77:115013,2008 · 21 pages and 9 figures; one figure and some discussions added, version to appear in PRD

arxiv created 2008/05/07 · openalex publication_date 2008/06/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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^\ensuremath-\ensuremath→\ensuremathΦ_i\ensuremathΦ_jZ, \ensuremathΦ_i=h⁰, H⁰, A⁰, H^\ifmmode±\else\textpm\fi. 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^\ensuremath-\ensuremath→h⁰h⁰Z in the decoupling limit where h⁰ mimics the standard model Higgs boson. The processes e⁺e^\ensuremath-\ensuremath→h⁰h⁰Z and e⁺e^\ensuremath-\ensuremath→h⁰H⁰Z are also discussed in the fermiophobic limit where distinctive signatures such as 4\ensuremathγ+X, 2\ensuremathγ+X, and 6\ensuremathγ+X are expected in the Type-I two Higgs doublet model.

Citations

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• Automated one-loop calculations in four and D dimensions