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Measurement of the ratio B(B-→ D*0K-)/B(B → D*0π-) and of the CP asymmetry of B-→ D*CP+0K-decays

  • Author(s): Aubert, B
  • Barate, R
  • Boutigny, D
  • Couderc, F
  • Karyotakis, Y
  • Lees, JP
  • Poireau, V
  • Tisserand, V
  • Zghiche, A
  • Grauges-Pous, E
  • Palano, A
  • Pompili, A
  • Chen, JC
  • Qi, ND
  • Rong, G
  • Wang, P
  • Zhu, YS
  • Eigen, G
  • Ofte, I
  • Stugu, B
  • Abrams, GS
  • 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
  • Schroeder, T
  • Steinke, M
  • Boyd, JT
  • Chevalier, N
  • Cottingham, WN
  • Kelly, MP
  • Latham, TE
  • Wilson, FF
  • Cuhadar-Donszelmann, T
  • Hearty, C
  • Knecht, NS
  • Mattison, TS
  • McKenna, JA
  • Thiessen, D
  • Khan, A
  • Kyberd, P
  • Teodorescu, L
  • Blinov, AE
  • Blinov, VE
  • Druzhinin, VP
  • Golubev, VB
  • Ivanchenko, VN
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Yushkov, AN
  • Best, D
  • Bruinsma, M
  • Chao, M
  • Eschrich, I
  • Kirkby, D
  • Lankford, AJ
  • Mandelkern, M
  • Mommsen, RK
  • Roethel, W
  • Stoker, DP
  • Buchanan, C
  • Hartfiel, BL
  • Weinstein, AJR
  • Foulkes, SD
  • et al.
Abstract

We study the decays B-→ D*0π-and B-→ D*0K-, where the D*0decays into D0π0, with the D0reconstructed in the CP-even (CP+) eigenstates K-K+and π-π+and in the (non-CP) channels K-π+, K-π+π+π-, and K-π+π0. Using a sample of about 123 × 106BB̄ pairs, we measure the ratios of decay rates R*non-CP≡ B(B-→ D*non-CP0K-)/B(B-→ D*non-CP0π-) = 0.086 ± 0.0040(stat)-0.0031+0.0042(syst), and provide the first measurements of R*CP+≡ B(B-→ D*CP+0K-)/B(B-→ D*CP+0π-) = 0.0086 ± 0.021(stat) ± 0.007(syst), and of the CP asymmetry A*CP+≡ B(B-→ D*CP+0K-)-B(B+→ D*CP+0K+)/B(B-→ D*CP+0K-)+B(B+→ D*CP+0K+) = 0.10 ± 0.23(stat)-0.04+0.03(syst). © 2005 The American Physical Society.

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