{"paper":{"title":"Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"George M. Fuller (UCSD), Huaiyu Duan (UCSD), J. Carlson (LANL), Yong-Zhong Qian (UMN)","submitted_at":"2007-07-02T19:04:25Z","abstract_excerpt":"We examine a phenomenon recently predicted by numerical simulations of supernova neutrino flavor evolution: the swapping of supernova $\\nu_e$ and $\\nu_{\\mu,\\tau}$ energy spectra below (above) energy $\\EC$ for the normal (inverted) neutrino mass hierarchy. We present the results of large-scale numerical calculations which show that in the normal neutrino mass hierarchy case, $\\EC$ decreases as the assumed $\\nu_e\\rightleftharpoons\\nu_{\\mu,\\tau}$ effective $2\\times 2$ vacuum mixing angle ($\\simeq \\theta_{1 3}$) is decreased. However, these calculations also indicate that $\\EC$ is essentially inde"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.0290","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0707.0290/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}