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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 | 2002/09 |
| 形態種別 | 学術雑誌 |
| 標題 | Observation of the ηc(2S) in Exclusive B → KKSK-π+ Decays |
| 執筆形態 | 共著 |
| 掲載誌名 | Phys. Rev. Lett. 89, 102001 (2002)(5pages) |
| 概要 | S.-K. Choi, S. Okuno, et al. [Belle Collaboration] , We report the observation of a narrow peak in the KSK-π+ invariant mass distribution in a sample of exclusive B → KKSK-π+ decays collected with the Belle detector at the KEKB asymmetric e+e- collider. The measured mass of the peak is M = 3654±6(stat)±8(syst) MeV/c2, and we place a 90％ confidence level upper limit on the width of Γ＜55 MeV/c2. The properties agree with heavy-quark potential model expectations for the ηc(2S) meson, the n = 2 singlet S charmonium state. |
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