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 2001/09
形態種別 学術雑誌
標題 Observation of
Cabibbo suppressed
BD(*)K- decays at Belle
執筆形態 共著
掲載誌名 Physical Review Letters:Volume87, 111801, 4pages(2001)
概要 K. Abe, S. Okuno, et al. [Belle Collaboration],We
report observations of the Cabibbo suppressed decays BD(*)K- using a 10.4fb-1 data sample accumulated at the υ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. We find that the ratios of Cabibbo suppressed to Cabibbo favored branching fractions are B(B-D0K-)/B(B-D0π-) = 0.079 ± 0.009 ± 0.006, B({B}0D+K-)/B({B}0D+π-) = 0.068±0.015±0.007, B(B-D*0K-)/B(B-D*0π-) = 0.078±0.019±0.009, and ({B}0D*+K-)/B({B}0D*+π-) = 0.074±0.015±0.006. These are the first observations of the BD+K-, D*0K-, and D*+K- decay processes.