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

P. Osland·P. N. Pandita
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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.

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P. Osland, P. N. Pandita. 1998-12-04. Measuring the Trilinear Couplings of MSSM Neutral Higgs Bosons at High-Energy e^+e^- Colliders. https://doi.org/10.1103/physrevd.59.055013

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