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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. |