{"paper":{"title":"Mixing effects of $\\Sigma^0-\\Lambda^0$ in $\\Lambda_c^+$ decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Chia-Wei Liu, C.Q. Geng, Tien-Hsueh Tsai","submitted_at":"2020-02-22T00:50:47Z","abstract_excerpt":"We analyze the mixing between $\\Sigma^0$ and $\\Lambda^0$ based on the baryon masses. We distinguish the contributions from QCD and QED in the baryon mass splittings. We find that the mixing angle between $\\Sigma^0$ and $\\Lambda^0$ is $(2.07\\pm 0.03)\\times 10^{-2} $, which leads to the decay branching fraction and up-down asymmetry of $\\Lambda_c^+ \\to \\Sigma^0 e^+ \\nu_e$ to be ${\\cal B}(\\Lambda_c^+ \\to \\Sigma^0 e^+ \\nu_e)=(1.5\\pm 0.2)\\times 10^{-5}$ and $\\alpha(\\Lambda_c^+ \\to \\Sigma^0 e^+ \\nu_e)=-0.86\\pm 0.04$, respectively. Moreover, we obtain that $\\Delta {\\cal B}\\equiv {\\cal B}(\\Lambda_c^+\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.09583","kind":"arxiv","version":1},"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/2002.09583/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"}