Year: 2025
Type: article
Abstract: We present analytic expressions for three-flavor neutrino oscillations in presence of invisible neutrino decay and matter effects. Using the well-known Cayley-Hamilton formalism, the leading-order terms are derived for oscillation probabilities in all major channels assuming the neutrino mass eigenstate ν 3 to decay. Our work extends and complements previous studies utilizing the Cayley-Hamilton theorem, providing the series expansions for ν e → ν e , ν e → ν μ , ν e → ν τ , ν μ → ν μ , and ν μ → ν τ . The accuracy of the analytical formulas is investigated by comparing the results with numerically calculated probabilities. We also comment on the implications on unitarity violation.
Authors: Jesper Grönroos, Tommy Ohlsson, Sampsa Vihonen
Institutions: AlbaNova, KTH Royal Institute of Technology
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4407174267