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Dai, WS; Li, XQ; Zhao, G; Dai, WS , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. | |
Contribution of penguins to the nonspectator effects in B-, (B)over-bar(0), Lambda(b) decays and the missing charm problem | |
发表期刊 | COMMUNICATIONS IN THEORETICAL PHYSICS |
关键词 | Heavy Mesons Lifetime |
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. |
2000 | |
ISSN | 0253-6102 |
卷号 | 33期号:3页码:431-436 |
学科领域 | Physics |
收录类别 | SCI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.itp.ac.cn/handle/311006/12981 |
专题 | SCI期刊论文 |
通讯作者 | Dai, WS , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. |
推荐引用方式 GB/T 7714 | Dai, WS,Li, XQ,Zhao, G,et al. 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. |
APA | Dai, WS,Li, XQ,Zhao, G,&Dai, WS , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2000).Contribution of penguins to the nonspectator effects in B-, (B)over-bar(0), Lambda(b) decays and the missing charm problem.COMMUNICATIONS IN THEORETICAL PHYSICS,33(3),431-436. |
MLA | Dai, WS,et al."Contribution of penguins to the nonspectator effects in B-, (B)over-bar(0), Lambda(b) decays and the missing charm problem".COMMUNICATIONS IN THEORETICAL PHYSICS 33.3(2000):431-436. |
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