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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 | 2002/06 |
形態種別 | 学術雑誌 |
標題 | Measurements of Branching Fractions and Decay Amplitudes in B → J/ψ K* decays |
執筆形態 | 共著 |
掲載誌名 | Phys.Lett.B538(2002) |
巻・号・頁 | 11-20頁 |
概要 | K.Abe,S.Okuno,et al.[Belle Collaboration],The branching fractions and the decay amplitudes of B → J/ψ K* decays are measured in a 29.4fb-1 data sample collected with the Belle detector at the KEKB electron-positron collider. The decay amplitudes of helicity states of the J/ψ K* system are determined from the full angular distribution of the final state particles in the transversity basis. The branching fractions are measured to be (1.29±0.05±0.13) × 10-3 for neutral mesons and (1.28±0.07±0.14) × 10-3 for charged mesons. The measured longitudinal and transverse (perpendicular to the transversity plane) amplitudes are |A0|2 = 0.62±0.02±0.03 and |A¶erp|2 = 0.19±0.02±0.03, respectively. The value of |A¶erp|2 shows that the CP even component dominates in the B0 → J/ψ K*0(KSπ0) decay. |