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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10659
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10659

    題名: Observation of a Narrow Charmonium - Like State in Exclusive B+- ---> K+- PI+ PI- J / PSI Decays
    Authors: 郭榮升
    S.K. Choi;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2003-12-23
    Issue Date: 2010-11-11 09:06:38 (UTC+8)
    Abstract: We report the observation of a narrow charmonium-like state produced in the exclusive decay process B+ -> K+ pi+pi- J/psi. This state, which decays into pi+pi- J/psi, has a mass of 3872.0+-0.6(stat)+-0.5(syst) MeV, a value that is very near the M_D + M_D* mass threshold. The results are based on an analysis of 152M B-Bbar events collected at the Upsilon(4S) resonance in the Belle detector at the KEKB collider. The statistical significance of the signal is in excess of 10 sigma.
    關聯: Physical Review Letters / vol.91, iss.26, 262001
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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