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	2003/02
形態種別	学術雑誌
標題	Study of time-dependent CP-violating asymmetries in b → s{q}q decays
執筆形態	共著
掲載誌名	Phys. Rev. D 67, 031102(R) (2003) (6 pages)
概要	K. Abe, S. Okuno, et al. [Belle Collaboration] , We present a measurement of CP-violation parameters in the b → s{q} q penguin transitions (q = s,u,d) based on a 78 fb^-1 data sample collected at the υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e⁺e^- collider. One neutral B meson is reconstructed in the φ K_S⁰, K⁺K^-K_S⁰, or η^’ K_S⁰ decay channel, and the flavor of the accompanying B meson is identified from its decay products. CP violation parameters for each of the three modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays.