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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10686
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10686


    題名: Observation of the eta(c)(2s) in Exclusive B ---> K K(s) K- Pi+ Decays
    Authors: 郭榮升
    S.K. Choi;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2002-08-19
    Issue Date: 2010-11-11 09:06:47 (UTC+8)
    Abstract: We report the observation of a narrow peak in the KSK−π+ invariant mass distribution in a sample of exclusive B→KKSK−π+ decays collected with the Belle detector at the KEKB asymmetric e+e− collider. The measured mass of the peak is M=3654±6(stat)±8(syst)  MeV/c2, and we place a 90% confidence level upper limit on the width of Γ<55  MeV/c2. The properties agree with heavy-quark potential model expectations for the ηc(2S) meson, the n=2 singlet S charmonium state.
    關聯: Phys. Rev. Lett. / Vol. 89, Iss. 10, 102001
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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