July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

Antineutrinos from the Sun and sterile neutrino decays

Jul 31, 2020, 1:42 PM
3m
virtual conference

virtual conference

Poster 02. Neutrino Physics Neutrino Physics - Posters

Speaker

Matheus Hostert (University of Minnesota)

Description

Searches for solar antineutrinos from $\nu\to\overline{\nu}$ conversions of $B^8$ neutrinos are highly
sensitive to any source of MeV antineutrinos from the Sun. In this work we adapt these searches to non-minimal
neutrino decay models recently discussed in the context of the LSND, MiniBooNE, and reactor anomalies. The
production of such sterile neutrinos in the Sun, followed their cascade-like decays $\nu_4 \to \nu \phi \to \nu \nu \overline{\nu}$ via a new scalar $\phi$ results in upper limits for the neutrino mixing $|U_{e4}|^2$ of a few per
mille. We then conclude with future prospects for Super-Kamiokande with added Gadolinium and comment on other
interesting models for such decays.

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Primary author

Matheus Hostert (University of Minnesota)

Presentation materials