Light Higgs decay modes of Z-boson in the left–right twin Higgs model
Light Higgs decay modes of Z-boson in the left–right twin Higgs model
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DOI：
10.1016/j.nuclphysb.2011.04.016
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
Lei Wang;Xiao-Fang Han
中科院分区：
文献类型：
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作者：
Lei Wang;Xiao-Fang Han
左右孪生希格斯模型预言了一个轻的赝标玻色子<$0，并为Z玻色子开辟了一些新的衰变模式，如Z→ f <$0和Z→ <$0 γ。我们在当前实验允许的参数空间中检验了这些衰变模式，发现Z→ B B = 0的分支比可以达到10− 8，这应该可以在ILC的GigaZ选项中访问。然而，对于Z→ τ <$0和Z→ τ 0 γ，分支比可以达到10− 9，这在GigaZ选项中很难达到。
The left–right twin Higgs model predicts a light pseudoscalar boson ϕ 0 and opens up some new decay modes for Z-boson, such as Z→ f¯ f ϕ 0 and Z→ ϕ 0 γ. We examine these decay modes in the parameter space allowed by current experiments, and find that the branching ratios can reach 10− 8 for Z→ b¯ b ϕ 0, which should be accessible at the GigaZ option of the ILC. However, the branching ratios can reach 10− 9 for Z→ τ¯ τ ϕ 0 and Z→ ϕ 0 γ, which are hardly accessible at the GigaZ option.