Measurements of Branching Fractions for B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma

Understand

We present branching fraction measurements for the radiative decays B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma.

• The analysis is based on a data sample of 465 million BBbar events collected with the BaBar detector at the PEP-II asymmetric B factory.
• We find BR(B+ -> rho+ gamma) = (1.20 +0.42 -0.37 +/-0.20) x 10^-6, BR(B0 -> rho0 gamma) = (0.97 +0.24 -0.22 +/-0.06) x 10^-6, and a 90% C.L.
• upper limit BR(B0 -> omega gamma) < 0.9 x 10^-6, where the first error is statistical and the second is systematic.