{"paper":{"title":"Large CP Asymmetries in $B^{\\pm}\\to\\eta_c(\\chi_{c0})\\pi^{\\pm}$ from $\\eta_c(\\chi_{c0})$ Width","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gad Eilam, Michael Gronau, Roberto R. Mendel","submitted_at":"1995-02-14T08:51:38Z","abstract_excerpt":"We study CP asymmetries in $B^{\\pm}\\to h\\pi^{\\pm}$ decays, where the hadronic states $h=\\rho\\rho, K\\Kbar\\pi$, $\\pi^+\\pi^-K^+K^-$, etc., and $h=\\pi^+\\pi^-, K^+K^-, 2(\\pi^+\\pi^-)$, etc., are taken on the resonances $\\eta_c$ and $\\chi_{c0}$, respectively. The relatively large $\\eta_c$ and $\\chi_{c0}$ decay widths, of about 10$-$15 MeV, provide the necessary absorptive phase in the interference between the resonance (going through $b\\to c\\cbar d$) and the background (through $b\\to u\\ubar d$) contributions to the amplitude. Large asymmetries of order 10$\\%$ or more are likely in some modes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9502293","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"}