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arXiv · 2204.13130

Unitarity bounds for all symmetry-constrained 3HDMs

Miguel P. Bento·Jorge C. Romão·João P. Silva
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Abstract

Models with three Higgs doublets (3HDM) are the source of much recent activity, for they are key components of many solutions to the problems of the Standard Model; from extra sources of CP violation to Dark Matter candidates. We compute explicitly the theoretical bounds for all symmetry-constrained 3HDM arising from the perturbative unitarity of two-to-two scattering amplitudes. In addition, we propose a method based on principal minors that foregoes diagonalization and which is preferable in all models (not only 3HDM) dealing with large scattering matrices.

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Miguel P. Bento, Jorge C. Romão, João P. Silva. 2022-04-27. Unitarity bounds for all symmetry-constrained 3HDMs. https://doi.org/10.1007/jhep08(2022)273

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