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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10677
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10677


    題名: Observation of Large CP Violation In The Neutral B Meson System
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2001-08-14
    Issue Date: 2010-11-11 09:06:44 (UTC+8)
    Abstract: We present a measurement of the standard model CP violation parameter sin2φ1 based on a 29.1fb−1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. One neutral B meson is fully reconstructed as a J/ψKS, ψ(2S)KS, χc1KS, ηcKS, J/ψKL, or J/ψK*0 decay and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we determine sin2φ1=0.99±0.14(stat)±0.06(syst). We conclude that we have observed CP violation in the neutral B meson system.
    關聯: Phys. Rev. Lett. / Vol. 87, Iss. 9, 091802
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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