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Article Dans Une Revue Journal of High Energy Physics Année : 2021

Loop-generated neutrino masses in composite Higgs models

Résumé

We present a composite scotogenic model for neutrino masses, which are generated via loops of ℤ$_{2}$-odd composite scalars. We consider three different approaches to the couplings of the neutrinos (including three right-handed singlets) and the composite sector: ETC-like four-fermion interactions, fundamental partial compositeness and fermion partial compositeness. In all cases, the model can feature sizeable couplings and remain viable with respect to various experimental constraints if the three ℤ$_{2}$-odd right-handed neutrinos have masses between the TeV and the Planck scales. Additionally, the lightest ℤ$_{2}$-odd composite scalar may play the role of Dark Matter, either via thermal freeze-out or as an asymmetric relic. This mechanism can be featured in a variety of models based on vacuum misalignment. For concreteness, we demonstrate it in a composite two-Higgs scheme based on the coset SU(6)/Sp(6).

Dates et versions

hal-02973172 , version 1 (20-10-2020)

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Giacomo Cacciapaglia, Martin Rosenlyst. Loop-generated neutrino masses in composite Higgs models. Journal of High Energy Physics, 2021, 09, pp.167. ⟨10.1007/JHEP09(2021)167⟩. ⟨hal-02973172⟩
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