Neutrinophilic Non-Standard Interactions

Abstract

We construct UV-complete models for non-standard neutrino interactions mediated by a sub-GeV gauge boson Z' coupled to baryon number $B$ or $B-L$. A flavor-dependent Z' coupling to neutrinos is induced by mixing a U(1)'-charged Dirac fermion with the active neutrinos, naturally suppressing flavor violation or non-universality of the charged leptons to the loop level. We show that these models can give rise to large flavor-conserving as well as flavor-violating non-standard neutral-current neutrino interactions potentially observable in current or future oscillation experiments such as DUNE without being in conflict with other constraints such as neutrino scattering or lepton-flavor-violating decays. In particular, the LMA-Dark solution to the solar-neutrino anomaly can be obtained for $U(1{)}_B$, but not for $U(1{)}_{B-L}$.

23 pages, minor changes, added references; matches PRD version

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Cited by in corpus (4)

• Particle Physics Models for the 17 MeV Anomaly in Beryllium Nuclear Decays
• Detecting the $L_{\mu }-L_{\tau }$ gauge boson at Belle II
• Impact of lepton flavour universality violation on CP violation sensitivity of long baseline neutrino oscillation experiments
• Viable models for large non-standard neutrino interactions