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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10641
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    題名: Measurements of Branching Fractions and Decay Amplitudes in B ---> J / Psi K* Decays
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2002-06-27
    Issue Date: 2010-11-11 09:06:32 (UTC+8)
    Abstract: The branching fractions and the decay amplitudes of B→J/ψK∗ decays are measured in a 29.4 fb−1 data sample collected with the Belle detector at the KEKB electron–positron collider. The decay amplitudes of helicity states of the J/ψK∗ 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⊥|2=0.19±0.02±0.03, respectively. The value of |A⊥|2 shows that the CP even component dominates in the decay.
    關聯: Physics Letters B / Volume 538, Issues 1–2, P.11–20
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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