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Triple and quartic interactions of Higgs bosons in the two-Higgs-doublet model with CP violation

M. N. Dubinin·A. V. Semenov
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Abstract

We consider the two-Higgs-doublet model with explicit CP-violation, where the effective Higgs potential is not CP-invariant at the tree-level. Three neutral Higgs bosons of the model are the mixtures of CP-even and CP-odd bosons which exist in the CP-conserving limit of the theory. The mass spectrum and tree-level couplings of the neutral Higgs bosons to gauge bosons and fermions are significantly dependent on the parameters of the Higgs boson mixing matrix. We calculate the Higgs-gauge boson, Higgs-fermion, triple and quartic Higgs self-interactions in the MSSM with explicit CP-violation in the Higgs sector and CP-violating Yukawa interactions of the third generation scalar quarks. In some regions of the MSSM parameter space substantial changes of the self-interaction vertices take place, leading to significant suppression or enhancement of the multiple Higgs boson production cross sections.

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M. N. Dubinin, A. V. Semenov. 2003-01-21. Triple and quartic interactions of Higgs bosons in the two-Higgs-doublet model with CP violation. https://doi.org/10.1140/epjc%2Fs2003-01141-5

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