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 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.