Charged Higgs boson phenomenology in supersymmetric models with Higgs triplets

Diaz-Cruz, J.L., Hernandez-Sanchez, J., Moretti, S. and Rosado, A. (2008) Charged Higgs boson phenomenology in supersymmetric models with Higgs triplets. Physical Review D, 77 (3), 035007-[30pp]. (doi:10.1103/PhysRevD.77.035007).

Abstract

We present a detailed study of the Higgs sector within an extension of the Minimal Supersymmetric Standard Model that includes one Complex Higgs Triplet (MSSM+1CHT). The model spectrum includes three singly charged Higgs bosons as well as three CP-even (or scalar) and two CP-odd (or pseudoscalar) neutral Higgs bosons. We present an approximated calculation of the one-loop radiative corrections to the neutral CP-even Higgs masses (m_{_}H_i⁰) and the couplings H_i⁰ Z⁰ Z⁰ (i = 1, 2, 3), which determine the magnitude of the Higgs-strahlung processes e⁺ e^- → Z⁰ H⁰_i. Limits from LEP2 are then considered, in order to obtain bounds on the neutral Higgs sector. Further, we also include the experimental limits from LEP2 on e⁺e^- → H⁺H^- and those on BR(t → b H⁺) from Tevatron, to derive bounds on the mass of the two lightest charged Higgs bosons (H₁^± and H₂^±). Concerning the latter, we find some cases, where m_H₁^± ~ 90 GeV, that are not excluded by any experimental bound, even for large values of tan β, so that they should be looked for at the Large Hadron Collider (LHC).

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Contributors

Author: S. Moretti

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