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 2003/12
形態種別 学術雑誌
査読 査読あり
標題 Observation of B → K*L+L-
執筆形態 共著
掲載誌名 Phys. Rev. Lett. 91, 261601 (2003) (6 pages)
著者・共著者 A. Ishikawa, S. Okuno et al. [The Belle Collaboration]
概要 We report the observation of the flavor-changing neutral current decay B → K*L+L- and an improved measurement of the decay B → KL+L-, where L represents an electron or a muon, with a data sample of 140fb-1 accumulated at the υ(4S) resonance with the Belle detector at KEKB. The results for the branching fractions are B(B → K*L+L-) = (11.5+2.6-2.4±0.8±0.2) × 10-7 and B(B → KL+L-) = (4.8+1.0-0.9±0.3±0.1) × 10-7, where the first error is statistical, the second is systematic and the third is from model dependence.
,BELLE-70.