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Search for the decay &Bmacr;(0)-->D(*0)gamma 2000
Rodriguez, and
Yamamoto, and
Bergfeld, and
Eisenstein, and
Ernst, and
Gladding, and
Gollin, and
Hans, and
Johnson, and
Karliner, and
Marsh, and
Palmer, and
Plager, and
Sedlack, and
Selen, and
Thaler, and
Williams, and
Edwards, and
Janicek, and
Patel, and
Sadoff, and
Ammar, and
Bean, and
Besson, and
Davis, and
Kwak
Syracuse University, Syracuse, New York 13244, USA.
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.
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Palmer, and
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Thaler, and
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Edwards, and
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