Study of Exclusive Radiative $B$ Meson Decays

Publisher Website

5 June 2000

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 84 (23) , 5283-5287
https://doi.org/10.1103/physrevlett.84.5283

Abstract

We have studied exclusive, radiative

B

meson decays to charmless mesons in

9.7 \times 10^{6}

B \bar{B}

decays accumulated with the CLEO detector. We measure

B (B^{0} \to K^{* 0} (892) γ) = ({4.55}_{- 0.68}^{+ 0.72} \pm 0.34) \times 10^{- 5}

and

B (B^{+} \to K^{* +} (892) γ) = ({3.76}_{- 0.83}^{+ 0.89} \pm 0.28) \times 10^{- 5}

. We have searched for

CP

asymmetry in

B \to K^{*} (892) γ

decays and measure

A_{CP} = + 0.08 \pm 0.13 \pm 0.03

. We report the first observation of

B \to K_{2}^{*} (1430) γ

decays with a branching fraction of

({1.66}_{- 0.53}^{+ 0.59} \pm 0.13) \times 10^{- 5}

. No evidence for the decays

B \to ρ γ

and

B^{0} \to ω γ

is found and we limit

B (B \to (ρ / ω) γ) / B (B \to K^{*} (892) γ) < 0.32

at

90 %

C.L.

Keywords

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