Observation Of Exclusive (B)Over-Bar -> (Dk-)-K-() Decays

R. Mahapatra,H. Nelson,R. Briere,G. Chen,T. Ferguson,G. Tatishvili,H. Vogel,N. Adam, J. Alexander,C. Bebek,K. Berkelman,F. Blanc, V. Boisvert,D. Cassel, P. Drell,J. Duboscq,K. Ecklund,R. Ehrlich, L. Gibbons,B. Gittelman, S. Gray,D. Hartill, B. Heltsley,L. Hsu,C. Jones,J. Kandaswamy,D. Kreinick,A. Magerkurth,H. Mahlke-Krüger,T. Meyer,N. Mistry, E. Nordberg,M. Palmer,J. Patterson, D. Peterson,J. Pivarski, D. Riley,A. Sadoff,H. Schwarthoff,M. Shepherd,J. Thayer,D. Urner, B. Valant-Spaight,G. Viehhauser,A. Warburton,M. Weinberger,S. Athar, P. Avery,H. Stoeck, J. Yelton, G. Brandenburg, A. Ershov,D. Kim,R. Wilson, K. Benslama,B. Eisenstein, J. Ernst, G. Gollin,R. Hans,I. Karliner, N. Lowrey,M. Marsh, C. Plager,C. Sedlack,M. Selen,J. Thaler,J. Williams, K. Edwards,R. Ammar, D. Besson,X. Zhao,S. Anderson,V. Frolov,Y. Kubota, S. Lee, S. Li,R. Poling,A. Smith,C. Stepaniak,J. Urheim,S. Ahmed,M. Alam, L. Jian,M. Saleem,F. Wappler,E. Eckhart,K. Gan, C. Gwon, T. Hart,K. Honscheid,D. Hufnagel,H. Kagan,R. Kass,T. Pedlar,J. Thayer, E. von Toerne,T. Wilksen,M. Zoeller,H. Muramatsu,S. Richichi, H. Severini, P. Skubic,S. Dytman,S. Nam, V. Savinov,S. Chen,J. Hinson,J. Lee,D. Miller, V. Pavlunin, E. Shibata,I. Shipsey, D. Cronin-Hennessy,A. Lyon, C. Park, W. Park,E. Thorndike,T. Coan, Y. Gao,F. Liu, Y. Maravin,I. Narsky, R. Stroynowski,J. Ye,M. Artuso, C. Boulahouache,K. Bukin,E. Dambasuren, G. Moneti,R. Mountain, T. Skwarnicki,S. Stone, J. Wang,A. Mahmood, S. Csorna,I. Danko,Z. Xu,G. Bonvicini,D. Cinabro, M. Dubrovin,S. McGee, A. Bornheim, E. Lipeles,S. Pappas,A. Shapiro,W. Sun,A. Weinstein, G. Masek, H. Paar

PHYSICAL REVIEW LETTERS（2002）

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摘要

We report the first observation of the exclusive decays (B) over bar --> D-(*K-)*(-), using 9.66 x 10(6) B (B) over bar pairs collected at the Y(4S) with the CLEO detector. We measure the following branching fractions: B(B" --> (DK)-K-0*(-)) = (6.1 +/- 1.6 +/- 1.7) x 10(-4), B ((B) over bar (0) D+K*(-)) = (3.7 +/- 1.5 +/- 1.0) x 10(-4), B((B) over bar (0) --> D*K+*(-)) = (3.8 +/- 1.3 +/- 0.8) x 10(-4), and B((B) over bar (-) --> D*K-0*(-)) = (7.7 +/- 2.2 +/- 2.6) x 10(-4). The (B) over bar --> 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)Over-Bar -> (Dk*-)-K-(*) Decays

Observation Of Exclusive (B)Over-Bar -> (Dk-)-K-() Decays