Search for the Radiative Penguin Decays B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma

Abstract

A search for the decays B --> rho(770) gamma and B0 --> omega(782)gamma is performed on a sample of 211x10^6 Y(4S)->BBbar events collected by the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring. No evidence for the decays is seen. We set the following limits on the individual branching fractions: BF(B --> rho+ gamma)<1.8 x 10^-6, BF(B --> rho0 gamma)<0.4 x 10^-6, and BF(B --> omega gamma)<1.0 x 10^-6 at the 90% confidence level (C.L.). We use the quark model to limit the combined branching fraction BFbar[B --> (rho/omega) gamma]<1.2 x 10^-6, from which we determine a constraint on the ratio of Cabibbo-Kobayashi-Maskawa matrix elements |V_td|/|V_ts|.

7 pages, 1 figure, submitted to Physical Review Letters and contributed to ICHEP04

References in corpus (3)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Implication of the $B\to (\rho ,\omega )\gamma$ Branching Ratios for the CKM Phenomenology
• Evidence of B0 --> rho0 pi0

Cited by in corpus (9)

• Exclusive radiative and electroweak b->d and b->s penguin decays at NLO
• |V_td/V_ts| from B-> V gamma
• CP violation and the CKM matrix
• Observation of b --> d gamma and Determination of |V_td/V_ts|
• Branching Fraction Measurements of B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma
• Search for the b --> d gamma process
• Electro-Weak Penguin and Leptonic Decays in BaBar
• Review of Recent Measurements of the Sides of the CKM Unitarity Triangle
• Status of the CKM Matrix