{"paper":{"title":"Gluonic contribution to $B\\to \\eta^{(\\prime)}$ form factors","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Hsiang-nan Li, T. Kurimoto, Yeo-Yie Charng","submitted_at":"2006-09-18T06:26:05Z","abstract_excerpt":"We calculate the flavor-singlet contribution to the $B\\to\\eta^{(\\prime)}$ transition form factors from the gluonic content of the $\\eta^{(\\prime)}$ meson in the large-recoil region using the perturbative QCD approach. The formulation for the $\\eta$-$\\eta'$ mixing in the quark-flavor and singlet-octet schemes is compared, and employed to determine the chiral enhancement scales associated with the two-parton twist-3 $\\eta^{(\\prime)}$ meson distribution amplitudes. It is found that the gluonic contribution is negligible in the $B\\to\\eta$ form factors, and reaches few percents in the $B\\to\\eta'$ o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0609165","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/0609165/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"}