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题名: Contribution of penguins to the nonspectator effects in B-, (B)over-bar(0), Lambda(b) decays and the missing charm problem
作者: Dai, WS ;  Li, XQ ;  Zhao, G
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2000
卷号: 33, 期号:3, 页码:431-436
关键词: HEAVY MESONS ;  LIFETIME
学科分类: Physics
通讯作者: Dai, WS , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
部门归属: Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Taking the nonspectator contributions from the "tree" level four-quark operators and the penguin-induced operators into account we recalculate the charm number n(c) in B decays. We find that for B- and Lambda(b), penguin contribution can be neglected, while for (B) over bar(d)(0), it is dominant if the nonfactorization factor (t(alpha)t(alpha)) is not sizably large. Some new physics may be needed to meet the present data.
收录类别: SCI
WOS记录号: WOS:000087224500018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12981
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Dai, WS,Li, XQ,Zhao, G. Contribution of penguins to the nonspectator effects in B-, (B)over-bar(0), Lambda(b) decays and the missing charm problem[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2000,33(3):431-436.
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