{"paper":{"title":"Precise branching ratio measurements in $^{19}$Ne beta decay and fundamental tests of the weak interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.B. Garnsworthy, B.M. Rebeiro, C.E. Svensson, C. Kierans, C.S. Sumithrarachchi, D.S. Cross, E.R. Tardiff, G.C. Ball, G. Hackman, H. Al-Falou, J.N. Orce, L. Milovanovic, M.K. Djongolov, M.R. Pearson, P.E. Garrett, P. Finlay, P.Z. Mabika, R.A.E. Austin, R. Churchman, R. D'Entremont, R. Dunlop, R. Kshetri, S.J. Williams, S.K.L. Sjue, S. O'Hagan, S. Reeve, S.S. Ntshangase, S. Triambak","submitted_at":"2018-10-04T17:24:32Z","abstract_excerpt":"We used the 8$\\pi$ $\\gamma$-ray spectrometer at the TRIUMF-ISAC radiocative ion beam facility to obtain high-precision branching ratios for $^{19}$Ne $\\beta^+$ decay to excited states in $^{19}$F. Together with other previous work, our measurements determine the superallowed $1/2^+ \\to 1/2^+$ beta branch to the ground state in $^{19}$F to be 99.9878(7)\\%, which is three times more precise than known previously. The implications of these measurements for testing a variety of weak interaction symmetries are discussed briefly."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.02331","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"}