title: Search for the decay &Bmacr;(0)-->D(*0)gamma
abstract: 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.
authors.affiliation: Syracuse University, Syracuse, New York 13244, USA.
authors.initials: JL
authors.lastname: Rodriguez
authors.initials: H
authors.lastname: Yamamoto
authors.initials: T
authors.lastname: Bergfeld
authors.initials: BI
authors.lastname: Eisenstein
authors.initials: J
authors.lastname: Ernst
authors.initials: GE
authors.lastname: Gladding
authors.initials: GD
authors.lastname: Gollin
authors.initials: RM
authors.lastname: Hans
authors.initials: E
authors.lastname: Johnson
authors.initials: I
authors.lastname: Karliner
authors.initials: MA
authors.lastname: Marsh
authors.initials: M
authors.lastname: Palmer
authors.initials: C
authors.lastname: Plager
authors.initials: C
authors.lastname: Sedlack
authors.initials: M
authors.lastname: Selen
authors.initials: JJ
authors.lastname: Thaler
authors.initials: J
authors.lastname: Williams
authors.initials: KW
authors.lastname: Edwards
authors.initials: R
authors.lastname: Janicek
authors.initials: PM
authors.lastname: Patel
authors.initials: AJ
authors.lastname: Sadoff
authors.initials: R
authors.lastname: Ammar
authors.initials: A
authors.lastname: Bean
authors.initials: D
authors.lastname: Besson
authors.initials: R
authors.lastname: Davis
authors.initials: N
authors.lastname: Kwak