 
|
|
|
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 | 2001/10 |
| 形態種別 | 学術雑誌 |
| 標題 | Observation of B → J/ψK1(1270) |
| 執筆形態 | 共著 |
| 掲載誌名 | Physical Review Letters:Volume87, 161601 (2001) |
| 概要 | K. Abe, S. Okuno, et al. [Belle Collaboration], We report the first observation of the exclusive decay process B → J/ψK1(1270) using a sample of 11.2M B{B} meson pairs collected in the Belle detector at the KEKB asymmetric energy e+e- collider. We measure branching fractions of B[B0 → J/ψK10(1270)] = (1.30±0.34±0.32) × 10-3 and B[B+ → J/ψK1+(1270)] = (1.80±0.34±0.39) × 10-3, where the first error is statistical and the second is systematic. These modes constitute approximately 15% of the total number of B → J/ψX decays. No evidence is seen for B → J/ψK1(1400) and we set an upper limit for this branching fraction. |
Copyright © Kanagawa University. All Rights Reserved.