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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 | 2003/03 |
| 形態種別 | 学術雑誌 |
| 標題 | Studies of B0-{B}0 mixing properties with inclusive dilepton events |
| 執筆形態 | 共著 |
| 掲載誌名 | Phys.Rev.D 67，052004（2003）（7 pages） |
| 概要 | N.C.Hastings，S.Okuno，et al.［Belle Collaboration］，We report a precise determination of the B0-{B}0 mixing parameter δ md based on the time evolution of same-sign and opposite-sign dilepton yields in υ(4S) decays. Data were collected with the Belle detector at KEKB. Using data samples of 29.4 fb-1 recorded at the υ(4S) resonance and 3.0 fb-1 recorded at an energy 60 MeV below the resonance, we measure δ md = [0.503±0.008(stat)±0.010(syst)] ps-1. From the same analysis, we also measure the ratio of charged and neutral B meson production at the υ(4S), f+/f0 = 1.01±0.03(stat)±0.09(syst), and CPT violation parameters in B0-{B}0 mixing, R(cos θ) = 0.00±0.12(stat)±0.01(syst) and I(cos θ) = 0.03±0.01(stat)±0.03(syst). |
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