{"paper":{"title":"The electromagnetic form factors of $\\Lambda_c$ hyperon in the vector meson dominance model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Junyao Wan, Yongliang Yang, Zhun Lu","submitted_at":"2021-02-05T10:32:51Z","abstract_excerpt":"We apply a modified vector meson dominance (VMD) model to analyze the electromagnetic form factors of the $\\Lambda_c$ hyperon in the time-like reaction $e^+e^-\\rightarrow \\Lambda_c^+ \\bar{\\Lambda}_c^-$. In the model, we include the contributions from the vector charmed mesons and their excitations $\\psi(1S)$, $\\psi(2S)$, $\\psi(3770)$, $\\psi(4040)$, $\\psi(4160)$ and $\\psi(4415)$. We perform a combined fit to the available data on the Born cross section in reaction $e^+e^-\\rightarrow \\Lambda_c^+ \\bar{\\Lambda}_c^-$ and the ratio of the electromagnetic form factors $|G_E/G_M|$ to obtain the values"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.03092","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/2102.03092/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"}