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  • Unitarity bounds for all sy...
    Bento, Miguel P.; Romão, Jorge C.; Silva, João P.

    The journal of high energy physics, 08/2022, Letnik: 2022, Številka: 8
    Journal Article

    A bstract 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.