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 2003/02
形態種別 学術雑誌
標題 Measurement of Branching Fractions for B → ηc K(*) Decays
執筆形態 共著
掲載誌名 Phys. Rev. Lett. 90, 071801 (2003)(6pages)
概要 F. Fang, T. Hojo, S. Okuno, et al. [Belle Collaboration]
, We report measurements of branching fractions for charged and neutral B → ηc K decays where the etac meson is reconstructed in the KS0K±π, K+K-π0, K*0K-π+, and p{p} decay channels. The neutral B0 channel is a CP eigenstate and can be used to measure the CP violation parameter §in 2φ1. We also report the first observation of the B0 → ηc K*0 mode. The results are based on an analysis of 29.1 fb-1 of data collected by the Belle detector at KEKB.