Muon anomalous magnetic moment and lepton flavor violation in MSSM
Muon anomalous magnetic moment and lepton flavor violation in MSSM
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DOI：
10.1140/epjc/s2003-01299-8
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发表时间：
2002-11
期刊：
影响因子：
--
通讯作者：
X. Bi;Y. Kuang;Y. An
中科院分区：
文献类型：
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作者：
X. Bi;Y. Kuang;Y. An
我们对最小超对称标准模型内的μ子反常磁矩与辐射轻子味破坏（LFV）过程之间的相关性进行了全面分析。我们发现，在轻子质量本征态接近简并的情况下，来自 SUSY 的贡献，几乎不依赖于轻子风味混合，因此，与 LFV 过程之间没有直接关系。相反，如果前两代轻子比第三代轻子重得多，即在有效 SUSY 场景中，则这两个量密切相关。在后一种情况下，用于解释实验的 SUSY 参数空间与无轻子风味混合的情况有很大不同。特别是，希格斯诺质量参数μ可以是正值也可以是负值。
We give a thorough analysis of the correlation between the muon anomalous magnetic moment and the radiative lepton flavor violating (LFV) processes within the minimal supersymmetric standard model. We find that in the case when the slepton mass eigenstates are nearly degenerate,, coming from SUSY contributions, hardly depends on the lepton flavor mixing and, thus, there is no direct relation betweenand the LFV processes. On the contrary, if the first two generations' sleptons are much heavier than the third one, i.e., in the effective SUSY scenario, the two quantities are closely related. In the latter scenario, the SUSY parameter space to account for the experimentalis quite different from the case of no lepton flavor mixing. Especially, the Higgsino mass parameter μ can be either positive or negative.