{"paper":{"title":"Muonium Hyperfine Structure and the Decay $ \\mu ^+\\to e^+ +\\overline \\nu _e +\\nu _{\\mu}$ in Models with Dilepton Gauge Bosons","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"H.Fujii, K.Sasaki, T.Sasaki, Y.Mimura","submitted_at":"1993-09-18T11:18:22Z","abstract_excerpt":"We examine the muonium ($\\mu ^+e^-$)-antimuonium ($\\mu ^-e^+$) system in the models which accomodate the dilepton gauge bosons, and study their contributions to the ground state hyperfine splitting in ``muonium''. We also consider the exotic muon decay $\\mu ^+\\to e^+ +\\overline \\nu _e +\\nu _{\\mu}$ mediated by the dilepton gauge boson, and obtain a lower bound $(M_{X^{\\pm }}/g_{3l})>550 \\rm GeV$ at 90\\% confidence level for the singly-charged dilepton mass using the unitarity relation of the Kobayashi-Maskawa matrix for the 3-family case."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9309287","kind":"arxiv","version":4},"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"}