{"paper":{"title":"Matter- and magnetically-driven flavor conversion of neutrinos in magnetorotational collapses","license":"http://creativecommons.org/licenses/by/4.0/","headline":"In magnetorotational stellar collapses, neutrinos with a small magnetic moment undergo resonant flavor-changing mixing with antineutrinos for Majorana particles.","cross_cats":["hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Irene Tamborra, Marco Manno, Pablo Mart\\'inez-Mirav\\'e","submitted_at":"2026-03-09T19:00:04Z","abstract_excerpt":"The magnetorotational collapse of massive stars copiously emits neutrinos of all flavors, with a prominent hierarchy between the non-electron and electron flavor average energies. Relying on a three-dimensional neutrino-magnetohydrodynamic simulation of a $13 M_\\odot$ progenitor, we investigate flavor conversion in matter. We find that, in addition to resonant flavor conversion of neutrinos and antineutrinos in matter, (anti)neutrinos experience chirality-flipping interactions due to their non-zero magnetic moment ($\\mu \\lesssim 10^{-12} \\mu_B$) and large magnetic field in the source ($B \\sime"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"For Majorana neutrinos, this leads to resonant flavor-changing neutrino-antineutrino mixing. The event rate expected from a Galactic collapse at current and next-generation neutrino telescopes, such as IceCube and Hyper-Kamiokande, strongly depends on the orientation of the magnetorotational collapse with respect to the observer direction and flavor conversion scenario.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"Neutrinos possess a non-zero magnetic moment at or below 10^{-12} μ_B and the 3D neutrino-MHD simulation accurately supplies the density and magnetic-field profiles needed for the resonant conversion calculations to hold.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"In magnetorotational stellar collapses, neutrinos undergo resonant flavor conversion in matter plus magnetic-moment-driven chirality flipping for Majorana neutrinos, producing orientation-dependent event rates at detectors that peak 400-600 ms after bounce.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"In magnetorotational stellar collapses, neutrinos with a small magnetic moment undergo resonant flavor-changing mixing with antineutrinos for Majorana particles.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"606528a919522a741fa704f09bbc3b6d7b09749b99147554737b17ee6a2b9eba"},"source":{"id":"2603.08843","kind":"arxiv","version":2},"verdict":{"id":"9bbcbfc1-39f7-4052-830c-49a4b6df290e","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T13:01:21.565355Z","strongest_claim":"For Majorana neutrinos, this leads to resonant flavor-changing neutrino-antineutrino mixing. The event rate expected from a Galactic collapse at current and next-generation neutrino telescopes, such as IceCube and Hyper-Kamiokande, strongly depends on the orientation of the magnetorotational collapse with respect to the observer direction and flavor conversion scenario.","one_line_summary":"In magnetorotational stellar collapses, neutrinos undergo resonant flavor conversion in matter plus magnetic-moment-driven chirality flipping for Majorana neutrinos, producing orientation-dependent event rates at detectors that peak 400-600 ms after bounce.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"Neutrinos possess a non-zero magnetic moment at or below 10^{-12} μ_B and the 3D neutrino-MHD simulation accurately supplies the density and magnetic-field profiles needed for the resonant conversion calculations to hold.","pith_extraction_headline":"In magnetorotational stellar collapses, neutrinos with a small magnetic moment undergo resonant flavor-changing mixing with antineutrinos for Majorana particles."},"references":{"count":90,"sample":[{"doi":"","year":null,"title":"Bethe H A and Wilson J R 1985Astrophys. J.29514–23","work_id":"ed343a1a-5701-494c-a9a9-7fc3d8b5df48","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Janka,Explosion Mechanisms of Core-Collapse Supernovae,Ann","work_id":"bc83491b-402a-4d1b-9793-24286b0d1718","ref_index":2,"cited_arxiv_id":"1206.2503","is_internal_anchor":true},{"doi":"","year":null,"title":"M¨ uller B 2020Liv. Rev. Comput. Astrophys.63 (Preprint2006.05083)","work_id":"02674f04-01f0-42f0-9aad-086f88d67e0a","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Burrows A and Vartanyan D 2021Nature58929–39 (Preprint2009.14157)","work_id":"8b313998-5aa8-4591-aef1-831e8480a9a6","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Bisnovatyi-Kogan G S 1970Astronomicheskii Zhurnal47813","work_id":"9e225134-f85b-407c-86dc-161110f1d55d","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":90,"snapshot_sha256":"c518f999ffd6bcd8acbcb3c8ee5e41dc118de032d6cdba4e608ea10521eba668","internal_anchors":25},"formal_canon":{"evidence_count":1,"snapshot_sha256":"aec067eb6357f7b98c61ff82f47dd5f668cb60a558385401926e79c28966b51f"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}