{"paper":{"title":"Producing $\\Lambda(1405)$ and $\\Lambda(1520)$ in $\\pi^-p$ reaction to explore their inner structures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"nucl-th","authors_text":"Xiang Liu, Xiao-Yun Wang, Yuan Gao","submitted_at":"2026-02-12T01:46:26Z","abstract_excerpt":"In this work, the production mechanisms of the hyperon resonances $\\Lambda(1405)$ and $\\Lambda(1520)$ in the $\\pi^- p$ scattering are investigated within an effective Lagrangian approach incorporating Regge trajectories. By including contributions from $t$-channel $K^*$ and $u$-channel $\\Sigma$ exchanges, we perform global fits to the total and differential cross sections for $\\pi^{-} p \\rightarrow K\\Lambda(1405)$ and $\\pi^{-} p \\rightarrow K\\Lambda(1520)$. The results show good agreement with available experimental data. For the total cross section of $\\Lambda(1405)$ production, the $u$-chann"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.11480","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/2602.11480/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"}