The transition form factors for semi-leptonic weak decays of J/ψ in QCD sum rules

被引：42
|
作者：
Wang, Yu-Ming [1 ]
Zou, Hao [1 ]
Wei, Zheng-Tao [2 ]
Li, Xue-Qian [2 ]
Lue, Cai-Dian [1 ]
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2008年 / 54卷 / 01期
关键词：
D O I：
10.1140/epjc/s10052-007-0498-x
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Within the standard model, we investigate the semi-leptonic weak decays of J/psi. The various form factors of J/psi making the transition to a single charmed meson (D-(d,D-s)(*)) are studied in the framework of QCD sum rules. These form factors fully determine the rates of the weak semi-leptonic decays of J/psi and provide valuable information on non-perturbative QCD effects. Our results indicate that the decay rate of the semi-leptonic weak decay mode J/psi -> D-s(*)(-) + e(+) + nu(e) is at the order of 10(-10).
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页码：107 / 121
页数：15
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