Journal article
Constraints on decaying sterile neutrinos from solar antineutrinos
Physical review. D, Vol.104(5), p.1
09/24/2021
DOI: 10.1103/PhysRevD.104.055031
Abstract
Solar neutrino experiments are highly sensitive to sources of nu -> (nu) over bar conversions in the B-8 neutrino flux. In this work, we adapt these searches to nonminimal sterile neutrino models recently proposed to explain the LSND, MiniBooNE, and reactor anomalies. The production of such sterile neutrinos in the Sun, followed by the decay chain nu(4) -> nu phi -> nu nu(nu) over bar with a new scalar phi, results in upper limits for the neutrino mixing vertical bar U-e4 vertical bar(2) at the per-mille level. We conclude that a simultaneous explanation of all anomalies is in tension with KamLAND, Super-Kamiokande, and Borexino constraints on the flux of solar antineutrinos. We then present other minimal models that violate parity or lepton number, and discuss the applicability of our constraints in each case. Future improvements can be expected from existing Borexino data, as well as from future searches at Super-Kamiokande with added gadolinium.
Details
- Title: Subtitle
- Constraints on decaying sterile neutrinos from solar antineutrinos
- Creators
- Matheus Hostert - University of MinnesotaMaxim Pospelov - University of Minnesota
- Resource Type
- Journal article
- Publication Details
- Physical review. D, Vol.104(5), p.1
- DOI
- 10.1103/PhysRevD.104.055031
- ISSN
- 2470-0010
- eISSN
- 2470-0029
- Publisher
- Amer Physical Soc
- Number of pages
- 14
- Grant note
- province of Ontario through the Ministry of Research, Innovation, and Science; Ministry of Research and Technology of the Republic of Indonesia (RISTEK) desc0011842 / U.S. Department of Energy; United States Department of Energy (DOE) Perimeter Institute for Theoretical Physics government of Canada through the Department of Innovation, Science, and Economic Development
- Language
- English
- Date published
- 09/24/2021
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984945921302771
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