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 2003/03
形態種別 学術雑誌
標題 Observation of the Decay {B}0 → λc+{p}
執筆形態 共著
掲載誌名 Phys.Rev.Lett.90,121802(2003)(5pages)
概要 N.Gabyshev,H.Kichimi,S.Okuno,et al.[Belle Collaboration],We report the measurement of the charmed baryonic decay {B}0 → λc+{p} with a branching fraction of (2.19-0.49+0.56±0.32±0.57)×10-5 and a statistical significance of 5.8 σ. The errors are statistical, systematic, and the error of the λc+ → pK-π+ decay branching fraction. This is the first observation of a two-body baryonic B decay. The analysis is based on 78.2 fb-1 of data accumulated at the υ(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider.