Measuring the Trilinear Couplings of MSSM Neutral Higgs Bosons at High-Energy e^+e^- Colliders

Abstract

We present a detailed analysis of multiple production of the lightest CP-even Higgs boson (h) of the Minimal Supersymmetric Standard Model (MSSM) at high-energy e^+ e^- colliders. We consider the production of the heavier CP-even Higgs boson (H) via Higgs-strahlung e^+e^- \to ZH, in association with the CP-odd Higgs boson (A) in e^+e^- \to AH, or via the fusion mechanism e^+e^- \to ν_e \barν_e H, with H subsequently decaying through H \to hh, thereby resulting in a pair of lighter Higgs bosons (h) in the final state. These processes can enable one to measure the trilinear Higgs couplings λ_{Hhh} and λ_{hhh}, which can be used to theoretically reconstruct the Higgs potential. We delineate the regions of the MSSM parameter space in which these trilinear Higgs couplings could be measured at a future e^+ e^- collider. In our calculations, we include in detail the radiative corrections to the Higgs sector of the MSSM, especially the mixing in the squark sector.

Minor changes in text and figures, to appear in PRD

References in corpus (3)

• Physics with e^+e^- Linear Colliders
• QCD Corrections to the Masses of the neutral CP-even Higgs Bosons in the MSSM
• The Higgs Boson Mass as a Probe of the Minimal Supersymmetric Standard Model

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• Higgs Pair-Production in the Standard Model at Next Generation Linear $e^{+}{e}^{-}$ Colliders
• Next-to-leading order corrections to decays of the heavier CP-even Higgs boson in the two Higgs doublet model
• Neutral Higgs Boson Pair-Production and Trilinear Self-Couplings in the MSSM at ILC and CLIC Energies
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