Branching fraction measurements of B+->rho(+)gamma, B-0 ->rho(0)gamma, and B-0 ->omega gamma

B. Aubert, J.Y. Chen, K. Peters, L.L. Zhang, S. Chen, W. Wang, X.H. Li, M Lang, M.A. Baak, G. Raven, H. Snoek, P. David, H. Schroder, H. Liu, N. van Bakel, A. Wagner, Z. Yu

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Abstract

We present a study of the decays B+→ρ+γ, B0→ρ0γ, and B0→ωγ. The analysis is based on data containing 347×106 BB̄ events recorded with the BABAR detector at the PEP-II asymmetric B factory. We measure the branching fractions B(B+→ρ+γ)=(1.10-0.33+0.37±0.09)×10-6 and B(B0→ρ0γ)=(0.79-0.20+0.22±0.06)×10-6, and set a 90% C.L. upper limit B(B0→ωγ)<0.78×10-6. We also measure the isospin-averaged branching fraction B(B→(ρ/ω)γ)=(1.25- 0.24+0.25±0.09)×10-6, from which we determine |Vtd/Vts|=0.200-0. 020+0.021±0.015, where the first uncertainty is experimental and the second is theoretical. © 2007 The American Physical Society.
Original languageEnglish
JournalPhysical Review Letters
Volume98
Issue number15
DOIs
Publication statusPublished - 2007

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Branching fraction measurements of B+->rho(+)gamma, B-0 ->rho(0)gamma, and B-0 ->omega gamma

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