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arXiv 0709.0042hep-ph
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具有自发P和CP破坏的双Higgs双二重态左右模型

Two Higgs Bi-doublet Left-Right Model With Spontaneous P and CP Violation

Yue-Liang Wu, Yu-Feng Zhou

摘要:

一个具有两个Higgs双二重态的左右对称模型被证明是一个对自发P和CP破坏都相容的模型。通过近似全局U(1)族对称性的机制,可以抑制味变中性流。我们计算的约束从神经$K$介子质量差$Δm_K$和证明,右手规范玻色子$W_2$的贡献,在箱形图的质量远低于1 TeV是允许的,由于取消引起的轻荷希格斯玻色子的质量范围$150 \sim 300$ GeV。$W_2$对$ε_K$的贡献可以通过适当选择出现在右手Cabbibo-Kobayashi-Maskawa矩阵中的附加CP相来抑制。该模型与$B^0$质量差$Δm_B$和混合诱导的CP破坏量$\sin2β_{J/ψ}$完全一致,而这在只有一个Higgs双二重态的模型中是很难实现的.在对撞机LHC和ILC上可以直接寻找标准模型之外的新物理。

英文摘要:

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 currents can be suppressed by the mechanism of approximate global U(1) family symmetry. We calculate the constraints from neural $K$ meson mass difference $Δm_K$ and demonstrate that a right-handed gauge boson $W_2$ contribution in box-diagrams with mass well below 1 TeV is allowed due to a cancellation caused by a light charged Higgs boson with a mass range $150 \sim 300$ GeV. The $W_2$ contribution to $ε_K$ can be suppressed from 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 quantity $\sin2β_{J/ψ}$, 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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