Journal article
Probing scalar non-standard interaction of supernova neutrinos in next-generation neutrino experiments
Journal of cosmology and astroparticle physics, Vol.2026(2), 076
02/01/2026
DOI: 10.1088/1475-7516/2026/02/076
Abstract
A new neutrino-matter interaction can potentially affect neutrino propagation through matter. In this work, we explore the impact of a flavor-conserving scalar-mediated non-standard neutrino interaction in the supernova neutrino flux. We observe that the presence of a scalar interaction involving muon and tau neutrinos (parameterized as η μμ and η ττ, respectively) can invert the neutrino mass eigenstate in which three neutrino flavor states are produced inside the supernova core, resulting in a significant modification of the electron neutrino flux from the supernova reaching the Earth. In the context of the DUNE experiment, we estimate the number of supernova neutrino events in the presence of scalar non-standard neutrino interaction η μμ or η ττ and contrast with the case without scalar-mediated non-standard interactions. Our results indicate that such scalar interactions introduce a new degeneracy in the measurement of neutrino mass ordering from supernova neutrinos. We show how the ν̅e event distribution in Hyper-Kamiokande experiment may help resolve the degeneracy between a model with new scalar interactions for normal ordered neutrino masses and the standard model with inverted mass ordering for a galactic supernova.
Details
- Title: Subtitle
- Probing scalar non-standard interaction of supernova neutrinos in next-generation neutrino experiments
- Creators
- Sudipta DasMary Hall Reno
- Resource Type
- Journal article
- Publication Details
- Journal of cosmology and astroparticle physics, Vol.2026(2), 076
- DOI
- 10.1088/1475-7516/2026/02/076
- ISSN
- 1475-7516
- eISSN
- 1475-7516
- Publisher
- IOP Publishing
- Grant note
- U.S. Department of Energy: DE-SC-0010113
We would like to thank Sudip Jana, Yago Porto, Bhaskar Dutta, Aparajitha Karthikeyan, and Nityasa Mishra for discussions. We also thank Damiano F. G. Fiorillo and Edoardo Vitagliano for insightful comments. S.D. thanks the organizers of the PHENO-2025 conference at the University of Pittsburg for providing an opportunity to present the preliminary results of this work. This work is supported by the U.S. Department of Energy Grant DE-SC-0010113.
- Language
- English
- Date published
- 02/01/2026
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9985139481602771
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