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Neutrino secret self-interactions: A booster shot for the cosmic neutrino background

Das, Anirban; Perez-Gonzalez, Yuber F.; Sen, Manibrata

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Authors

Anirban Das

Manibrata Sen



Abstract

Neutrinos might interact among themselves through forces that have so far remained hidden. Throughout the history of the Universe, such secret interactions could lead to scatterings between the neutrinos from supernova explosions and the nonrelativistic relic neutrinos left over from the big bang. Such scatterings can boost the cosmic neutrino background (CνB) to energies of O (MeV), making it, in principle, observable in experiments searching for the diffuse supernova neutrino background. Assuming a model-independent, but flavor universal, four-Fermi interaction, we determine the upscattered cosmic neutrino flux, and derive constraints on such secret interactions from the latest results from Super-Kamiokande. Furthermore, we also study prospects for detection of the boosted flux in future lead-based coherent elastic neutrino-nucleus scattering experiments. Nevertheless, given current constraints on flavor universal self-interactions, we find that the upscattered CνB contribution to the total DSNB flux is negligible, making a possible measurement of the boosted CνB insurmountable.

Citation

Das, A., Perez-Gonzalez, Y. F., & Sen, M. (2022). Neutrino secret self-interactions: A booster shot for the cosmic neutrino background. Physical Review D, 106(9), https://doi.org/10.1103/physrevd.106.095042

Journal Article Type Article
Acceptance Date Nov 16, 2022
Online Publication Date Nov 30, 2022
Publication Date Nov 20, 2022
Deposit Date Jan 3, 2024
Publicly Available Date Jan 3, 2024
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 106
Issue 9
DOI https://doi.org/10.1103/physrevd.106.095042
Public URL https://durham-repository.worktribe.com/output/2078892

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