Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-02-04
Phys.Rev.D77:115013,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages and 9 figures; one figure and some discussions added, version to appear in PRD
Scientific paper
10.1103/PhysRevD.77.115013
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.
Arhrib Abdesslam
Benbrik Rachid
Chiang Cheng-Wei
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