オクノ ショウジ   Okuno Shoji
  奥野 祥二
   所属   神奈川大学  工学部 情報システム創成学科
   職種   助教
言語種別 日本語
発行・発表の年月 2002/08
形態種別 学術雑誌
標題 Observation of B → D(*) K- K0(*) decays
執筆形態 共著
掲載誌名 Phys.Lett.B542(2002)
巻・号・頁 171-182頁
概要 A.Drutskoy,S.Okuno,et al.[Belle Collaboration],The B → D(*) K- K(*)0 decays have been observed for the first time. The branching fractions of the B → D(*) K- K(*)0 decay modes are measured. Significant signals are found for the B → D(*) K- K*0 and B- → D0 K- K0S decay modes. The invariant mass and polarization distributions for the K-K*0 and K-K0S subsystems have been studied. For the K-K*0 sybsystem these distributions agree well with those expected for two-body B → D(*) a1-(1260) decays, with a1-(1260) → K- K*0. The analysis was done using 29.4 fb-1 of data collected with the Belle detector at the e+ e- asymmetric collider KEKB.