{"paper":{"title":"Annihilation Type Radiative Decays of $B$ Meson in Perturbative QCD Approach","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Beijing), Cai-Dian Lu (IHEP, Ying Li","submitted_at":"2006-05-22T02:35:10Z","abstract_excerpt":"With the perturbative QCD approach based on $k_T$ factorization, we study the pure annihilation type radiative decays $B^0 \\to \\phi\\gamma$ and $B^0\\to J/\\psi \\gamma$. We find that the branching ratio of $B^0 \\to \\phi\\gamma$ is $(2.7^{+0.3+1.2}_{-0.6-0.6})\\times10^{-11}$, which is too small to be measured in the current $B$ factories of BaBar and Belle. The branching ratio of $B^0\\to J/\\psi \\gamma$ is $({4.5^{+0.6+0.7}_{-0.5-0.6}})\\times10^{-7}$, which is just at the corner of being observable in the $B$ factories. A larger branching ratio $BR(B_s^0 \\to J/\\psi \\gamma) \\simeq 5 \\times 10^{-6}$ i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0605220","kind":"arxiv","version":4},"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/hep-ph/0605220/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"}