Research Papers in Physics and Astronomy

 

Date of this Version

8-4-1997

Comments

Published by American Physical Society. Phys. Rev. Lett. 79, 799 (1997). Permission to use. http://prl.aps.org/. Copyright © 1997 American Physical Society.

Abstract

Using the CLEO-II data set we have searched for the decays B0D(*)+D(*)-. We observe one candidate signal event for the decay B0D*+D*- with an expected background of 0.022 ± 0.011 events. This yield corresponds to a branching fraction of B(B0D*+D*-) = [5.317-3.7+7.1(stat) ± 1.0(syst)] x 10-4 and an upper limit of B(B0D*+D*-) < 2.2 X 10-3 at the 90% C.L. We see no significant excess of signal above the expected background level in the other modes, and we calculate the 90% C.L. upper limits on the branching fractions to be B(B0DD±) < 1.8 X 10-3 and B(B0D+D-) < 1.2 X 10-3.

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