Title

Search for the decay b̄00γ

Document Type

Article

Publication Date

5-8-2000

Abstract

We report results of a search for the rare radiative decay B̄ → D γ. Using 9.66 × 10 BB̄ 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 5.0× 10 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 → sγ mechanism in the standard model. © 2000 The American Physical Society. 0 0 6 -5

Publication Name

Physical Review Letters

Volume Number

84

First Page

4292

Last Page

4295

Issue Number

19

DOI

10.1103/PhysRevLett.84.4292

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