We present branching fraction measurements for the radiative decays B+→ρ+γ, B0→ρ0γ, and B0→ωγ. The analysis is based on a data sample of 465×106 BB̄ 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. 37+0.42±0.20)×10-6, B(B0→ρ0γ)=(0.97-0.22+0. 24±0.06)×10-6, and a 90% C.L. upper limit B(B0→ωγ) <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)/2Γ(B0→ρ0γ)-1=-0.43-0.22+0.25±0.10.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Measurements of branching fractions for B+→ρ+γ, B0→ρ0γ, and B0→ωγ. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(11) [10.1103/PhysRevD.78.112001].

Measurements of branching fractions for B+→ρ+γ, B0→ρ0γ, and B0→ωγ

CARPINELLI, Massimo;
2008

Abstract

We present branching fraction measurements for the radiative decays B+→ρ+γ, B0→ρ0γ, and B0→ωγ. The analysis is based on a data sample of 465×106 BB̄ 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. 37+0.42±0.20)×10-6, B(B0→ρ0γ)=(0.97-0.22+0. 24±0.06)×10-6, and a 90% C.L. upper limit B(B0→ωγ) <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)/2Γ(B0→ρ0γ)-1=-0.43-0.22+0.25±0.10.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2008
78
11
112001
none
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2008). Measurements of branching fractions for B+→ρ+γ, B0→ρ0γ, and B0→ωγ. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(11) [10.1103/PhysRevD.78.112001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389506
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