研究者情報 | 神奈川大学

オクノ　ショウジ Okuno Shoji 奥野　祥二所属神奈川大学情報学部システム数理学科職種助教
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.