We present branching fraction measurements for the radiative decays B(+)-> rho(+)gamma, B(0) -> rho(0)gamma, and B(0) -> omega gamma. The analysis is based on a data sample of 465 X 10(6) B (B) over bar 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(+) -> rho(+)gamma) = (1.20(-0.37)(+0.42) +/- 0.20) X 10(-6), B(B(0) -> rho(0)gamma) = (0.97(-0.22)(+0.24) +/- 0.06) X 10(-6), and a 90% C.L. upper limit B(B(0) -> omega gamma) < 0.9 X 10(-6), where the first error is statistical and the second is systematic. We also measure the isospin-violating quantity Gamma(B(+) -> rho(+)gamma)/2 Gamma(B(0) -> rho(0)gamma) - 1 = -0.43 (+0.25)(-0.22) +/- 0.10.

Measurements of branching fractions for B(+) -> rho(+)gamma, B(0) -> rho(0)gamma, and B(0) -> omega gamma RID C-5223-2009

LUSIANI, Alberto;
2008

Abstract

We present branching fraction measurements for the radiative decays B(+)-> rho(+)gamma, B(0) -> rho(0)gamma, and B(0) -> omega gamma. The analysis is based on a data sample of 465 X 10(6) B (B) over bar 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(+) -> rho(+)gamma) = (1.20(-0.37)(+0.42) +/- 0.20) X 10(-6), B(B(0) -> rho(0)gamma) = (0.97(-0.22)(+0.24) +/- 0.06) X 10(-6), and a 90% C.L. upper limit B(B(0) -> omega gamma) < 0.9 X 10(-6), where the first error is statistical and the second is systematic. We also measure the isospin-violating quantity Gamma(B(+) -> rho(+)gamma)/2 Gamma(B(0) -> rho(0)gamma) - 1 = -0.43 (+0.25)(-0.22) +/- 0.10.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/1613
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