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题名: CP asymmetry in B -> phi K-S in a general two-Higgs-doublet model with fourth-generation quarks
作者: Wu, YL ;  Zhou, YF
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2004
卷号: 36, 期号:1, 页码:89-95
关键词: CHANGING NEUTRAL CURRENTS ;  ELECTRIC-DIPOLE MOMENT ;  4TH GENERATION ;  DECAYS ;  VIOLATION ;  NONCONSERVATION ;  MUON
学科分类: Physics
通讯作者: Wu, YL , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Dortmund, Inst Phys, D-4221 Dortmund, Germany
英文摘要: We discuss the time-dependent CP asymmetry of the decay B --> phiK(S) in an extension of the standard model with both a two Higgs doublet and additional fourth-generation quarks. We show that, although the standard model with a two Higgs doublet and the standard model with fourth-generation quarks alone are not likely to largely change the effective sin 2beta from the decay B --> phiK(S), the model with both an additional Higgs doublet and fourth-generation quarks can easily account for the possible large negative value of sin 2beta without conflicting with other experimental constraints. In this model, additional large CP violating effects may arise from the flavor-changing Yukawa interactions between neutral Higgs bosons and the heavy fourth-generation down type quark, which can modify the QCD penguin contributions. With the constraints obtained from b --> s (s) over bars processes such as B --> X(s)gamma and Deltam(Bs)(0), this model can lead to an effective sin 2beta as large as - 0.4 in the CP asymmetry of B --> phiK(S).
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000223019800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14050
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:
Wu, YL,Zhou, YF. CP asymmetry in B -> phi K-S in a general two-Higgs-doublet model with fourth-generation quarks[J]. EUROPEAN PHYSICAL JOURNAL C,2004,36(1):89-95.
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