What a Direct Neutrino Mass Measurement Might Teach Us about the Dark Sector$${}^{\mathbf{\#}}$$

Searches for dark matter suggest that it couples to ordinary only very weakly and possibly through the Higgs or other scalar bosons. On hand, neutrinos might not couple boson directly, but a loop of particles, which would naturally explain small neutrino masses. We demonstrate current experimental constraints on such ‘‘scotogenic’’ scenario allow make linear dependence lightest mass sector-Higgs coupling explicit, so measurement by KATRIN experiment directly determine its value.