{"paper":{"title":"Production of unstable heavy neutrinos in proto-neutron stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"C. Albertus, M. A. P\\'erez-Garc\\'ia, M. Masip","submitted_at":"2015-09-09T20:13:48Z","abstract_excerpt":"We discuss the production of a class of heavy sterile neutrinos $\\nu_h$ in proto-neutron stars. The neutrinos, of mass around $50$ MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a magnetic dipole moment $\\mu\\approx 10^{-6}$ GeV$^{-1}$ implies that they are thermally produced through $e^+ e^-\\to \\bar \\nu_h \\nu_h$ in the early phase of the core collapse, whereas a heavy--light transition moment $\\mu_{\\rm tr}\\approx 10^{-8}$ GeV$^{-1}$ allows their decay $\\nu_h\\to \\nu_i \\gamma$ with a lifetime around $10^{-3}$ s. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.03306","kind":"arxiv","version":2},"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"}