| 双Higgs模型Ⅲ下的稀有衰变B→X_s |
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| 引用本文： | 姚丽萍,朱林婕,鲁公儒,王松德.双Higgs模型Ⅲ下的稀有衰变B→X_s[J].河南师范大学学报(自然科学版),2008,36(2). |
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| 作者姓名： | 姚丽萍 朱林婕 鲁公儒 王松德 |
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| 摘 要： | 在模型III下计算了对B介子稀有衰变过程的新物理贡献.在所考虑的参数空间里,发现:对稀有衰变的新物理贡献能够使其分支比提高一到两个数量级,接近目前的实验测量限制;根据ALEPH等实验组的实验测量数据,可以给出对Yukawa耦合tλt的限制.
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| 关 键 词： | 稀有B介子衰变 双Higgs模型 Yukawa耦合 |
Rare Decay in the Two-Higgs-doublet Model of Type-Ⅲ |
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| YAO Li-ping,ZHU Lin-jie,LU Gong-ru,WANG Song-de.Rare Decay in the Two-Higgs-doublet Model of Type-Ⅲ[J].Journal of Henan Normal University(Natural Science),2008,36(2). |
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| Authors: | YAO Li-ping ZHU Lin-jie LU Gong-ru WANG Song-de |
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| Abstract: | This paper calculates the new physics contribution to rare decay in the general in the two-Higgs-doublet model of type-Ⅲ.Whthin the considered parameter space,it is found that the new physics contribution can provide one to two orders of enhancement to the branching ratio and can saturate the experimental bound in some regions of the parameter space.The ALEPH upper limit also leads to further constraint on the size of the Yukawa coupling λtt. |
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| Keywords: | rare B meson decays Two-Higgs-doublet model yukawa coupling |
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