{"paper":{"title":"Testing neutrino instability with active galactic nuclei","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J. Maalampi, J.T. Peltoniemi (Univ. of Helsinki), P. Keranen","submitted_at":"1999-01-25T18:28:02Z","abstract_excerpt":"Active galactic nuclei and gamma ray bursts at cosmological distances are sources of high-energy electron and muon neutrinos and provide a unique test bench for neutrino instability. The typical lifetime-to-mass ratio one can reach there is $\\tau/m\\sim 500 Mpc/cE_{\\nu}\\sim 500$ s/eV. We study the rapid decay channel $\\nu_i\\to\\nu_j+\\phi$, where $\\phi$ is a massless or very light scalar (possibly a Goldstone boson), and point out that one can test the coupling strength of $g_{ij}\\nu_i\\nu_j$ down to $g_{ij}\\lsim 10^{-8} eV/m$ by measuring the relative fluxes of $\\nu_{e}$, $\\nu_{\\mu}$ and $\\nu_{\\t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9901403","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}