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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10670
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10670

    題名: Observation of Cabibbo Suppressed B ---> D(*)K- Decays At BELLE
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2001-08-22
    Issue Date: 2010-11-11 09:06:41 (UTC+8)
    Abstract: We report observations of the Cabibbo suppressed decays B→D(*)K− using a 10.4fb−1 data sample accumulated at the Υ(4S) resonance with the Belle detector at the KEKB e+e− storage ring. We find that the ratios of Cabibbo suppressed to Cabibbo favored branching fractions are B(B−→D0K−)/B(B−→D0π−)=0.079±0.009±0.006, B(B¯0→D+K−)/B(B¯0→D+π−)=0.068±0.015±0.007, B(B−→D*0K−)/B(B−→D*0π−)=0.078±0.019±0.009, and B(B¯0→D*+K−)/B(B¯0→D*+π−)=0.074±0.015±0.006. These are the first observations of the B→D+K−, D*0K−, and D*+K− decay processes.
    關聯: Phys. Rev. Lett. / Vol. 87, Iss. 11 , 111801
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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