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 2003/11
形態種別 学術雑誌
査読 査読あり
標題 Measurement of Branching Fractions and Polarization in B → φ K(*) Decays
執筆形態 共著
掲載誌名 Phys. Rev. Lett. 91, 201801 (2003) (6 pages)
著者・共著者 K.-F. Chen, A. Bozek,
S.Okuno, et al. [BELLE Collaboration],
概要 K.-F. Chen, A. Bozek,
S.Okuno, et al. [BELLE Collaboration],
We present the first measurement of decay amplitudes in B → φ K* and measurements of branching fractions in B → φ K(*) decays based on 78.1 fb-1 of data recorded at the υ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. The decay amplitudes for the different φ K*0 helicity states are measured from the angular distributions of final state particles in the transversity basis. The longitudinal and transverse complex amplitudes are |A0|2 = 0.43±0.09±0.04, |A|2 = 0.41±0.10±0.04, arg(A||) = -2.57±0.39±0.09, and arg(A) = 0.48±0.32±0.06. The direct CP-violating asymmetries are found to be consistent with zero.