{"paper":{"title":"$\\pi \\Lambda$ scattering phase shifts and CP violation in $\\Xi \\to \\pi \\Lambda$ decay","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. N. Kamal","submitted_at":"1998-01-19T18:55:13Z","abstract_excerpt":"CP-violating signals in weak $ \\Xi\\to \\pi \\Lambda$ decay require the knowledge of $\\pi \\Lambda$ $S$- and $P$-wave scattering phases at ${m}_{\\Xi}$ center-of-mass energy. We have calculated these phases in baryon chiral perturbation theory with the ground-state $\\Sigma$ in $s$ and $u$ channels and ${{3 \\over 2}}^{+}$ $\\Sigma(1385)$ in the $u$ channel. We do not treat the baryons as heavy. We find ${\\delta}_{S} = {1.2}^{\\circ}$ and ${\\delta}_{P} = -{1.7}^{\\circ}$ with the central value of the strong coupling parameter $D$. We also investigate the variation of the scattering phases as functions o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9801349","kind":"arxiv","version":3},"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"}