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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10745
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10745


    題名: Study of CP-Violating Asymmetries in B0 --> PI+ PI- Decays
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2002-07-26
    Issue Date: 2010-11-11 09:07:06 (UTC+8)
    Abstract: We present a measurement of CP-violating asymmetries in B0→π+π− decays based on a 41.8   fb−1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We fully reconstruct one neutral B meson as a B0→π+π− CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters Sππ=−1.21+0.38−0.27(stat)+0.16−0.13(syst) and Aππ=+0.94+0.25−0.31(stat)±0.09(syst).
    關聯: Phys. Rev. Lett. / Vol. 89, Iss. 7, 071801
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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