{"paper":{"title":"Resolving puzzle in $\\Xi_c^0\\to \\Xi^-e^+\\nu_e$ with $\\Xi_c-\\Xi_c'$ mixing","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Chao-Qiang Geng, Chia-Wei Liu, Xiang-Nan Jin","submitted_at":"2022-10-13T17:38:16Z","abstract_excerpt":"We study the ratio of $R=2 \\Gamma(\\Xi_c^0 \\to \\Xi^- e^+ \\nu_e )/3\\Gamma(\\Lambda_c^+ \\to \\Lambda e^+ \\nu_e )$, which is found to be $R= 1 (0.8)$ from the exact (broken) $SU(3)$ flavor symmetry, in sharp contrast to the average value of $R_{av}=0.59\\pm 0.10 $ from the ALICE collaboration and lattice QCD results. We propose to use the mixing of $\\Xi_c-\\Xi_c'$ to resolve the puzzle. With the model-independent mass relations, we find that the mixing angle is $|\\theta_c| = 0.137(5)\\pi$, which suppresses $\\Xi_c\\to \\Xi e^+ \\nu_e$ about $20\\%$ model-independently, resulting in $R\\approx 0.6$ with the $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.07211","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/2210.07211/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"}