Two Higgs bi-doublet left-right model with spontaneous P and CP violation  

作　　者：WU YueLiang 1↑ & ZHOU YuFeng2 1 Kavli Institute for Theoretical Physics China, Institute of Theoretical Physics, Chinese Academy of Sci- ences, Beijing 100190, China 2 KEK, Tsukuba, 305-0801, Japan 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2008年第12期1808-1825,共18页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Natural Science Foundation of China (NSFC) (Grant Nos. 10475105 and 10491306) ;the Key Project of Chinese Academy of Sciences (CAS)

摘　　要：A left-right symmetric model with two Higgs bi-doublet is shown to be a consistent model for both spontaneous P and CP violation. The flavor changing neutral cur- rents can be suppressed by the mechanism of approximate global U(1) family symmetry. The constraints from neural K meson mass difference ΔmK are calcu- lated and it is demonstrated that a right-handed gauge boson W2 contribution in box-diagrams with mass well below 1 TeV is allowed due to a cancelation caused by a light-charged Higgs boson with a mass range of 150-300 GeV. The W2 con- tribution to εK can be suppressed from an appropriate choice of additional CP phases appearing in the right-handed Cabbibo-Kobayashi-Maskawa matrix. The model is also found to be fully consistent with B0 mass difference ΔmB and the mixing induced CP violation sin2βJ/ψ , which is usually difficult for the model with only one Higgs bi-doublet. The new physics beyond the standard model can be directly searched at the colliders LHC and ILC.A left-right symmetric model with two Higgs bi-doublet is shown to be a consistent model for both spontaneous P and CP violation. The flavor changing neutral currents can be suppressed by the mechanism of approximate global U(1) family symmetry. The constraints from neural K meson mass difference Δm K are calculated and it is demonstrated that a right-handed gauge boson W 2 contribution in box-diagrams with mass well below 1 TeV is allowed due to a cancelation caused by a light-charged Higgs boson with a mass range of 150–300 GeV. The W 2 contribution to ε K can be suppressed from an appropriate choice of additional CP phases appearing in the right-handed Cabbibo-Kobayashi-Maskawa matrix. The model is also found to be fully consistent with B 0 mass difference Δm B and the mixing induced CP violation sin2β J/ Ψ, which is usually difficult for the model with only one Higgs bi-doublet. The new physics beyond the standard model can be directly searched at the colliders LHC and ILC.

关 键 词：left-right symmetry SPONTANEOUS P and CP VIOLATION TWO HIGGS bi-doublets new physics 

分 类 号：O413.4[理学—理论物理]