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 2002/05
形態種別 学術雑誌
標題 Study of three-body charmless B decays
執筆形態 共著
掲載誌名 Physical Review D 65,92005(2002)(11 pages)
概要 A.Garmash,S.Okuno,et al.[Belle Collaboration],We report on a study of three-body charmless decays B+ → K+h+h- based on a 29.1 fb-1 data sample collected with the Belle detector.With no assumptions on the intermediate mechanisms, the following three-body branching fractions have been measured for the first time:B(B+ → K+π-π+) = (55.6±5.8±7.7)×10-6 and B(B+ → K+K-K+) = (35.3±3.7±4.5)×10-6.We present the first observation of the decay B+ → f0(980)K+ with a branching fraction product of B(B+ → f0(980)K+)×B(f0(980) → π+π-) = (9.6-2.3 - 1.5 - 0.8+2.5 + 1.5 + 3.4)×10-6.This is the first reported example of a B meson decay to a scalar pseudoscalar final state.We also report the first observation of B+ → K*(892)0π+ decay with a branching fraction of B(B+ → K*(892)0π+) = (19.4-3.9 - 2.1 - 6.8+4.2 + 2.1 + 3.5)×10-6.