{"paper":{"title":"Revisiting the $B^{0} \\to \\pi^{0}\\pi^{0} $ decays in the perturbative QCD approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Xian-Qiao Yu, Yun-Feng Li","submitted_at":"2016-01-13T10:06:01Z","abstract_excerpt":"We recalculate the branching ratio and CP asymmetry for $\\bar{B}^{0} (B^{0})\\to \\pi^{0}\\pi^{0}$ decays in the Perturbative QCD approach. In this approach, we consider all the possible diagrams including non-factorizable contributions and annihilation contributions. We obtain $Br(\\bar{B}^{0} (B^{0})\\to \\pi^{0}\\pi^{0})=(1.17_{-0.12}^{+0.11})\\times 10^{-6}$. Our result is in agreement with the latest measured branching ratio of $B^{0}\\to\\pi^{0}\\pi^{0}$ by the Belle and HFAG Collaborations. We also predict large direct CP asymmetry and mixing CP asymmetry in $B^{0}\\to\\pi^{0}\\pi^{0}$ decays, which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03632","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"}