{"paper":{"title":"Direct CP Asymmetry of B -> X_d,s \\gamma in a model with Vector quarks","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A.G. Akeroyd, S. Recksiegel","submitted_at":"2001-09-11T08:37:11Z","abstract_excerpt":"We investigate the effect of vector quarks on the inclusive decays B -> X_d,s \\gamma. We show that the branching ratio of B -> X_d \\gamma can differ sizably from the SM and MSSM predictions, being enhanced to present experimental observability or suppressed such that present runs of the B factories would not observe it. Current measurements of the direct CP asymmetry (A_CP) for B -> X_s \\gamma are sensitive to the contribution from B -> X_d \\gamma. For a sufficiently enhanced BR(B -> X_d \\gamma) we show that the dominant contribution to the combined asymmetry may be from B -> X_d \\gamma. Thus "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0109091","kind":"arxiv","version":2},"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"}