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Search for b→u transitions in B-→D0K- and B-→D*0K-

  • Author(s): Aubert, B
  • Barate, R
  • Boutigny, D
  • Couderc, F
  • Karyotakis, Y
  • Lees, JP
  • Poireau, V
  • Tisserand, V
  • Zghiche, A
  • Grauges, E
  • Palano, A
  • Pappagallo, M
  • Pompili, A
  • Chen, JC
  • Qi, ND
  • Rong, G
  • Wang, P
  • Zhu, YS
  • Eigen, G
  • Ofte, I
  • Stugu, B
  • Abrams, GS
  • Battaglia, M
  • Borgland, AW
  • Breon, AB
  • Brown, DN
  • Button-Shafer, J
  • Cahn, RN
  • Charles, E
  • Day, CT
  • Gill, MS
  • Gritsan, AV
  • Groysman, Y
  • Jacobsen, RG
  • Kadel, RW
  • Kadyk, J
  • Kerth, LT
  • Kolomensky, YG
  • Kukartsev, G
  • Lynch, G
  • Mir, LM
  • Oddone, PJ
  • Orimoto, TJ
  • Pripstein, M
  • Roe, NA
  • Ronan, MT
  • Wenzel, WA
  • Barrett, M
  • Ford, KE
  • Harrison, TJ
  • Hart, AJ
  • Hawkes, CM
  • Morgan, SE
  • Watson, AT
  • Fritsch, M
  • Goetzen, K
  • Held, T
  • Koch, H
  • Lewandowski, B
  • Pelizaeus, M
  • Peters, K
  • Schroeder, T
  • Steinke, M
  • Boyd, JT
  • Burke, JP
  • Chevalier, N
  • Cottingham, WN
  • Kelly, MP
  • Cuhadar-Donszelmann, T
  • Hearty, C
  • Knecht, NS
  • Mattison, TS
  • McKenna, JA
  • Khan, A
  • Kyberd, P
  • Teodorescu, L
  • Blinov, AE
  • Blinov, VE
  • Bukin, AD
  • Druzhinin, VP
  • Golubev, VB
  • Ivanchenko, VN
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Yushkov, AN
  • Best, D
  • Bondioli, M
  • Bruinsma, M
  • Chao, M
  • Eschrich, I
  • Kirkby, D
  • Lankford, AJ
  • Mandelkern, M
  • Mommsen, RK
  • Roethel, W
  • Stoker, DP
  • et al.
Abstract

We search for B-→D0K- and B-→D*0K- and charge conjugates. Here the symbol D0 indicates decay of a D0 or D̄0 into K+π-, while the symbol D*0 indicates decay of a D*0 or D̄*0 to D0π0 or D0γ. These final states can be reached through the b→c transition B-→D(*)0K- followed by the doubly Cabibbo-Kobayashi-Maskawa (CKM)-suppressed D0→K+π-, or the b→u transition B-→D̄(*)0K- followed by the CKM-favored D̄0→K+π-. The interference of these two amplitudes is sensitive to the angle γ of the unitarity triangle. Our results are based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at SLAC. We find no significant evidence for these decays. We set a limit rB|A(B-→D̄0K-)/A(B-→D0K-)|<0.23 at 90% C.L. using the most conservative assumptions on the values of the CKM angle γ and the strong phases in the B and D decay amplitudes. In the case of the D* we set a 90% C.L. limit rB*2|A(B-→D̄*0K-)/A(B-→D*0K-) |2<(0.16)2 which is independent of assumptions on γ and strong phases. © 2005 The American Physical Society.

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