{"paper":{"title":"Double Collins effect in $e^+ e^-\\to\\Lambda \\bar\\Lambda X$ process in a diquark spectator model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Xiaoyu Wang, Yongliang Yang, Zhun Lu","submitted_at":"2018-02-06T08:41:38Z","abstract_excerpt":"We study the Collins function $H^\\perp_{1}$ of the $\\Lambda$ hyperon, which describes the fragmentation of a transversely polarized quark into an unpolarized $\\Lambda$ hyperon. We calculate $H^\\perp_{1}$ for light quarks of the $\\Lambda$ hyperon, in the diquark spectator model with a Gaussian form factor for the hyperon-quark-diquark vertex. The model calculation includes contributions from both the scalar diquark and vector diquark spectators. Using the model result, we estimate the weighted $\\cos2\\phi_0$ asymmetry in the process $e^+e^- \\to \\Lambda\\bar{\\Lambda}X$ contributed by the coupling "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01843","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":""},"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"}