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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 | 2001/03 |
形態種別 | 学術雑誌 |
標題 | Measurement of the CP Violation Parameter sin2φ1 in Bd0! Meson Decays |
執筆形態 | 共著 |
掲載誌名 | Physical Review Letters:Volume86,Issue 12 |
巻・号・頁 | 2509-2514頁 |
概要 | A.Abashian,S.Okuno et al.[Belle Collaboration],We present a measurement of the standard model CP violation parameter sin2φ1(also known as sin2β)based on a 10.5fb-1 data sample collected at the υ(4S)resonance with the Belle detector at the KEKB asymmentric e+e- collider.One neutral B meson is reconstructed in the J/ψ{K}s,ψ{(2S)K}s,χc1Ks,ηc{K}s,J/ψ{K}L,or J/ψ!π0 CP-eigenstate decay channel and the flavor of the accompanying B meson is indentified from its charged particle decay products.From the asymmetry in the destribution of the time interval between the two B-meson decay points,we determine sin2φ1=0.58-0.34+0.32(stat)-0.10+0.09(syst). |