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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10681
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10681


    題名: Observation Of Radiative B Meson Decays Into Higher Kaonic Resonances
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2001-07-24
    Issue Date: 2010-11-11 09:06:45 (UTC+8)
    Abstract: We have studied radiative B meson decays into higher kaonic resonances decaying into a two-body or three-body final state, using a data sample of 21.3 fb−1 recorded at the Υ(4S) resonance with the Belle detector at KEKB. For the two-body final state, we extract the B→K∗2(1430)0γ component from an analysis of the helicity angle distribution, and obtain B(B0→K∗2(1430)0γ)=(1.26±0.66±0.10)×10−5. For the three-body final state, we observe a B→Kππγ signal that is consistent with a mixture of B→K∗πγ and B→Kργ. This is the first time that B→K∗πγ and B→Kργ have been observed separately. We find their branching fractions to be B(B→K∗πγ;MK∗π<2.0GeV/c2)=(5.6±1.1±0.9)×10−5 and B(B→Kργ;MKρ<2.0GeV/c2)=(6.5±1.7+1.11.2)×10−5, respectively.
    關聯: International Europhysics Conference on High-Energy Physics, Budapest, Hungary, 12 - 18 Jul 2001, pp.088
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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