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arXiv · 2307.02361

Constraints on Neutrino Self-Interactions from IceCube Observation of NGC 1068

Jeffrey M. Hyde
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Abstract

The active galaxy NGC 1068 was recently identified by the IceCube neutrino observatory as the first known steady-state, extragalactic neutrino point source, associated with about 79 events over ten years. We use the IceCube data to place limits on possible neutrino self-interactions mediated by scalar particles with mass between 1 - 10 MeV. We find that constraints on flavor-specific $\nu_{\tau}$ self-interactions with low mediator masses are comparable to constraints derived from the diffuse high-energy neutrino flux at low energies, while constraints on flavor-universal self-interactions are less restrictive than current bounds.

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Jeffrey M. Hyde. 2023-07-05. Constraints on Neutrino Self-Interactions from IceCube Observation of NGC 1068. https://arxiv.org/abs/2307.02361

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