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	2002/09
形態種別	学術雑誌
標題	Observation of the Decay B⁰ → D^± D^*∓
執筆形態	共著
掲載誌名	Phys. Rev. Lett. 89, 122001 (2002)(6pages)
概要	K. Abe, S. Okuno, et al. [Belle Collaboration] , We report the first observation of the decay B⁰ → D^±D^∓ with the Belle detector at the KEKB e⁺e^- Collider operated at the υ(4S) resonance. The sum of branching fractions B(B⁰ → D⁺D^-) + B(B⁰ → D^-D^+) is measured to be (1.17±0.26_-0.25^+0.22)×10^-3 using the full reconstruction method where both charmed mesons from B⁰ decays are reconstructed. A consistent value [(1.48±0.38_-0.31^+0.28)×10^-3] is obtained using a partial reconstruction technique that uses only the slow pion from the D^- → {D}⁰π^- decay and a fully reconstructed D⁺ to reconstruct the B⁰.