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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 | 2002/12 |
| 形態種別 | 学術雑誌 |
| 標題 | Measurement of the B0-{B}0 Mixing Parameter δ md using Semileptonic B0 Decays |
| 執筆形態 | 共著 |
| 掲載誌名 | Phys.Rev.Lett.89，251803（2002）(6pages) |
| 概要 | K.Hara，S.Okuno，et al.［Belle Collaboration］，We present a measurement of the B0-{B}0 mixing parameter δmd using neutral B meson pairs in a 29.1 fb-1 data sample collected at the υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We exclusively reconstruct one neutral B meson in the semileptonic B0 → D*-L+ν decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain δ md = (0.494±0.012±0.015) ps-1, where the first error is statistical and the second error is systematic. |
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