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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131432
Measurement of B decays to ϕKγ
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We search for the decays B − → ϕ K − γ and ¯¯¯ B 0 → ϕ ¯¯¯¯ K 0 γ in a data sample of 228 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector. We measure the branching fraction B ( B − → ϕ K − γ ) = ( 3.5 ± 0.6 ± 0.4 ) × 10 − 6 and set an upper limit B ( ¯¯¯ B 0 → ϕ ¯¯¯¯ K 0 γ ) < 2.7 × 10 − 6 at the 90% confidence level. We also measure the direct C P asymmetry in B − → ϕ K − γ , A C P = ( − 26 ± 14 ± 5 ) % . The uncertainties are statistical and systematic, respectively.
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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Measurement of B decays to ϕKγ. Physical Review D. 2007. Vol. 75, num. 5, pags. 051102(R). ISSN 1550-7998. [consulted: 6 of June of 2026]. Available at: https://hdl.handle.net/2445/131432