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题名: Muon anomalous magnetic moment in the standard model with two Higgs doublets
作者: Wu, YL ;  Zhou, YF
刊名: PHYSICAL REVIEW D
出版日期: 2001
卷号: 64, 期号:11, 页码:-
关键词: CHANGING NEUTRAL CURRENTS ;  ELECTRIC-DIPOLE MOMENT ;  QUARK-MASS PREDICTION ;  CP VIOLATION ;  ELECTROWEAK CORRECTIONS ;  2-HIGGS-DOUBLET MODEL ;  HADRONIC CONTRIBUTIONS ;  GRAND UNIFICATION ;  G-2 EXPERIMENT ;  B->S-GAMMA
学科分类: Physics
通讯作者: Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The muon anomalous magnetic moment is investigated in the standard model with two Higgs doublets (S2HDM) motivated from spontaneous CP violation. Thus all the effective Yukawa couplings become complex. As a consequence of the nonzero phase in the couplings, the one-loop contribution from the neutral scalar bosons could be positive or negative relying on the CP phases. The interference between one- and two-loop diagrams can be constructive in a large parameter space of CP phases. This will result in a significant contribution to muon anomalous magnetic moment even in the flavor conserving process with a heavy neutral scalar boson (m(h)similar to 200 GeV) once the effective muon Yukawa coupling factor is large (\xi (mu)\ similar to 50). In general, the one-loop contributions from lepton flavor changing scalar interactions become more important. In particular, when all contributions are positive in a reasonable parameter space of CP phases, the recently reported 2.6 sigma experiment versus theory deviation can be easily explained even for a heavy scalar boson with a relatively small Yukawa coupling in the S2HDM.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000172450600080
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13639
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. Muon anomalous magnetic moment in the standard model with two Higgs doublets[J]. PHYSICAL REVIEW D,2001,64(11):-.
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