Search for the decays B-0->D(*)D+(*)(-)

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Issue Date
1997-08Author
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Darling, C.
Davis, Robin E. P.
Hancock, N.
Kotov, S.
Kravchenko, I.
Kwak, Nowhan
Publisher
AMERICAN PHYSICAL SOC
Type
Article
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Show full item recordAbstract
Using the CLEO-II data set we have searched for the decays B-0 --> D-(*+)D-(*-) We observe one candidate signal event for the decay B-0 --> D*+D*- with an expected background of 0.022 +/- 0.011 events. This yield corresponds to a branching fraction of B(B-0 --> D*+D*-) = [5.3(-3.7)(+7.1)(stat)) +/- 1.0(syst)] X 10(-4) and an upper limit of B(B-0 --> D*-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,,modes, and we calculate the 90% C.L. upper limits on the branching fractions to be B(B-0 --> D*+/-D-/+ < 1.8 X 10(-3) and B(B-0 --> D+D-) < 1.2 X 10(-3).
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Citation
Asner, DM, Bliss, DW, et al. Search for the decays B-0->D(*)D+(*)(-). PHYSICAL REVIEW LETTERS. August 1997. 79(5) : 799-803
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