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Observation of exclusive B --> D(*)K(*-) decays |
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| Authors: | Mahapatra R Nelson H N Briere R A Chen G P Ferguson T Tatishvili G Vogel H Adam N E Alexander J P Bebek C Berkelman K Blanc F Boisvert V Cassel D G Drell P S Duboscq J E Ecklund K M Ehrlich R Gibbons L Gittelman B Gray S W Hartill D L Heltsley B K Hsu L Jones C D Kandaswamy J Kreinick D L Magerkurth A Mahlke-Krüger H Meyer T O Mistry N B Nordberg E Palmer M Patterson J R Peterson D Pivarski J Riley D Sadoff A J Schwarthoff H Shepherd M R Thayer J G Urner D Valant-Spaight B Viehhauser G Warburton A Weinberger M Athar S B Avery P Stoeck H Yelton J Brandenburg G Ershov A Kim D Y-J Wilson R |
| Affiliation: | University of California, Santa Barbara, California 93106, USA. |
| Abstract: | We report the first observation of the exclusive decays B-->D((*))K(*-), using 9.66 x 10(6) BB pairs collected at the Upsilon(4S) with the CLEO detector. We measure the following branching fractions: B(B--->D(0)K(*-)) = (6.1+/-1.6+/-1.7)x10(-4), B(B(0)-->D(+)K(*-)) = (3.7+/-1.5+/-1.0)x10(-4), B(B(0)-->D(*+)K(*-)) = (3.8+/-1.3+/-0.8)x10(-4), and B(B--->D(*0)K(*-)) = (7.7+/-2.2+/-2.6)x10(-4). The B-->D(*)K(*-) branching ratios are the averages of those corresponding to the 00 and 11 helicity states. The errors shown are statistical and systematic, respectively. |
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