Lyu, Kun-FengStamou, EmmanuelWang, Lian-Tao2021-03-262021-03-262021-03-262021-01-0410.1103/PhysRevD.103.015004https://infoscience.epfl.ch/handle/20.500.14299/176674WOS:000604538000011Exotic self-interactions among the Standard Model neutrinos have been proposed as a potential reason behind the tension in the expansion rate, H-0, of the universe inferred from different observations. We constrain this proposal using electroweak precision observables, rare meson decays, and neutrinoless double-beta decay. In contrast to previous works, we emphasize the importance of carrying out this study in a framework with full Standard Model gauge invariance. We implement this first by working with a relevant set of Standard Model effective field theory operators and subsequently by considering a UV completion in the inverse seesaw model. We find that the scenario in which all flavors of neutrinos self-interact universally is strongly constrained, disfavoring a potential solution to the H-0 problem in this case. The scenario with self-interactions only among tau neutrinos is the least constrained and can potentially be consistent with a solution to the H-0 problem.Astronomy & AstrophysicsPhysics, Particles & FieldsPhysicsnumber nonconservationdecaymasstext::journal::journal article::research article