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http://hdl.handle.net/2445/131513
Title: | Measurements of branching fractions for B+→ρ+γ, B0→ρ0γ, and B0→ωγ |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 1-Dec-2008 |
Publisher: | American Physical Society |
Abstract: | We present branching fraction measurements for the radiative decays B + → ρ + γ , B 0 → ρ 0 γ , and B 0 → ω γ . The analysis is based on a data sample of 465 × 10 6 B ¯¯¯ B events collected with the BABAR detector at the PEP-II asymmetric-energy B Factory located at the Stanford Linear Accelerator Center. We find B ( B + → ρ + γ ) = ( 1.20 + 0.42 − 0.37 ± 0.20 ) × 10 − 6 , B ( B 0 → ρ 0 γ ) = ( 0.97 + 0.24 − 0.22 ± 0.06 ) × 10 − 6 , and a 90% C.L. upper limit B ( B 0 → ω γ ) < 0.9 × 10 − 6 , where the first error is statistical and the second is systematic. We also measure the isospin-violating quantity Γ ( B + → ρ + γ ) / 2 Γ ( B 0 → ρ 0 γ ) − 1 = − 0.43 + 0.25 − 0.22 ± 0.10 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.78.112001 |
It is part of: | Physical Review D, 2008, vol. 78, num. 11, p. 112001 |
URI: | http://hdl.handle.net/2445/131513 |
Related resource: | https://doi.org/10.1103/PhysRevD.78.112001 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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