Observation of exclusive B --> D()K(-) decays.

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,Benslama K, Eisenstein B I, Ernst J, Gollin G D,Hans R M, Karliner I, Lowrey N, Marsh M A,Plager C, Sedlack C, Selen M,Thaler J J,Williams J, Edwards K W, Ammar R, Besson D,Zhao X,Anderson S,Frolov V V,Kubota Y,Lee S J, Li S Z,Poling R,Smith A, Stepaniak C J, Urheim J, Ahmed S,Alam M S, Jian L,Saleem M, Wappler F, Eckhart E,Gan K K, Gwon C,Hart T,Honscheid K, Hufnagel D,Kagan H, Kass R, Pedlar T K,Thayer J B,von Toerne E, Wilksen T,Zoeller M M, Muramatsu H, Richichi S J, Severini H, Skubic P,Dytman S A, Nam S, Savinov V, Chen S, Hinson J W,Lee J, Miller D H, Pavlunin V, Shibata E I, Shipsey I P J, Cronin-Hennessy D,Lyon A L, Park C S, Park W, Thorndike E H, Coan T E, Gao Y S,Liu F, Maravin Y, Narsky I, Stroynowski R, Ye J, Artuso M, Boulahouache C, Bukin K, Dambasuren E, Moneti G C,Mountain R,Skwarnicki T,Stone S,Wang J C,Mahmood A H, Csorna S E, Danko I,Xu Z, Bonvicini G, Cinabro D, Dubrovin M, McGee S,Bornheim A, Lipeles E, Pappas S P, Shapiro A, Sun W M, Weinstein A J, Masek G, Paar H P, Null Null

Physical review letters（2002）

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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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Observation of exclusive B --> D(*)K(*-) decays.

Observation of exclusive B --> D()K(-) decays.