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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 | 2002/05 |
| 形態種別 | 学術雑誌 |
| 標題 | Observation of B± → p{p} K± |
| 執筆形態 | 共著 |
| 掲載誌名 | Phys. Rev. Lett. 88, 181803 (2002)（5pages） |
| 概要 | K. Abe, S. Okuno, et al. [Belle Collaboration]
, We report the observation of the decay mode B± → ppK± based on an analysis of 29.4 fb-1 of data collected by the Belle detector at KEKB. This is the first example of a b → s transition with baryons in the final state. The pp mass spectrum in this decay is inconsistent with phase space and is peaked at low mass. The branching fraction for this decay is measured to be B(B± → pp K±) = [4.3+1.1-0.9 (stat)±0.5 (syst)]×10-6. We also report upper limits for the decays B0 → p{p}KS and B± → ppπ±. |
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