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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 |
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言語種別 | 日本語 |
発行・発表の年月 | 2002/11 |
形態種別 | 学術雑誌 |
標題 | Study of exclusive B decays to charmed baryons |
執筆形態 | 共著 |
掲載誌名 | Phys. Rev. D 66, 091102(R) (2002) (5 pages) |
概要 | N. Gabyshev, H. Kichimi, S. Okuno, et al. [Belle Collaboration] , Using 29.1fb-1 of data accumulated at the υ(4S) with the Belle detector at KEKB, we have studied the decay modes {B}0 → λc+{p} π+π-, B- → λc+{p} π-, and {B}0 → λc+{p}. We report branching fractions of exclusive B decays to charmed baryons with four-, three- and two-body final states, including intermediate σc++ and σc0 states. We observed {B}0 → σc(2455)++{p} π- for the first time with a branching fraction of (2.38-0.55+0.63±0.41±0.62)×10-4 and observed evidence for the two-body decay {B}- → σc(2455)0{p} with a branching fraction of (0.45-0.19+0.26±0.07±0.12)×10-4. We also set improved upper limits for the two-body decays {B}0 → λc+{p} and {B}- → σc(2520)0{p}. |