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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10663
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10663

    題名: OBSERVATION OF B ---> K* L+ L-
    Authors: 郭榮升
    A. Ishikawa;Rurng-Sheng Kuo
    貢獻者: 物理系
    Keywords: Standard Model;Rare Decays;Belle Detector;Quark;Supersymmetry;Search
    Date: 2003
    Issue Date: 2010-11-11 09:06:39 (UTC+8)
    Abstract: We report the observation of the flavor-changing neutral current decay B-->K*l(+l-) and an improved measurement of the decay B-->Kl(+l-), where l represents an electron or a muon, with a data sample of 140 fb(-1) accumulated at the Y(4S) resonance with the Belle detector at KEKB. The results for the branching fractions are B(B-->K*l(+l-))=(11.5(-2.4)(+2.6)+/-0.8+/-0.2)x10(-7) and B(B-->Kl(+l-))=(4.8(-0.9)(+1.0)+/-0.3+/-0.1)x10(-7), where the first error is statistical, the second is systematic and the third is from model dependence.
    關聯: PHYS REV LETT / V.91 n.26
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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