Search for the decay &Bmacr;(0)-->D(*0)gamma
We report results of a search for the rare radiative decay &Bmacr;(0)-->D(*0)gamma. Using 9.66x10(6) B&Bmacr; meson pairs collected with the CLEO detector at the Cornell Electron Storage Ring, we set an upper limit on the branching ratio for this decay of 5.0x10(-5) at 90% C.L. This provides evidence that the anomalous enhancement is absent in W-exchange processes and that weak radiative B decays are dominated by the short-distance b-->sgamma mechanism in the standard model.
Rodriguez
JL
Syracuse University, Syracuse, New York 13244, USA.
Yamamoto
H
Bergfeld
T
Eisenstein
BI
Ernst
J
Gladding
GE
Gollin
GD
Hans
RM
Johnson
E
Karliner
I
Marsh
MA
Palmer
M
Plager
C
Sedlack
C
Selen
M
Thaler
JJ
Williams
J
Edwards
KW
Janicek
R
Patel
PM
Sadoff
AJ
Ammar
R
Bean
A
Besson
D
Davis
R
Kwak
N