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 2003/04
形態種別 学術雑誌
査読 査読あり
標題 Observation of {B}0 → D0 {K}0 and {B}0 → D0 {K}*0 Decays
執筆形態 共著
掲載誌名 Phys.Rev.Lett.90,141802(2003)(6pages)
著者・共著者 P.Krokovny,S.Okuno,et al.[Belle Collaboration],
概要 P.Krokovny,S.Okuno,et al.[Belle Collaboration],We report on a search for {B}0 → D(*)0{K}(*)0 decays based on 85×106 B{B} events collected with the Belle detector at KEKB. The {B}0 → D0{K}0 and {B}0 → D0{K}*0 decays have been observed for the first time with the branching fractions B({B}0 → D0{K}0) = (5.0-1.2+1.3±0.6)×10-5 and B({B}0 → D0{K}*0) = (4.8-1.0+1.1±0.5)×10-5. No significant signal has been found for the {B}0 → D*0{K}(*)0 and {B}0 → {D}(*)0{K}*0 decay modes, and upper limits at 90% C.L. are presented.