Additional two-loop contributions to electric dipole moments in supersymmetric theories
Additional two-loop contributions to electric dipole moments in supersymmetric theories
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DOI：
10.1016/s0370-2693(00)00268-9
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发表时间：
1999-10
影响因子：
4.4
通讯作者：
D. Chang;We-Fu Chang;W. Keung
中科院分区：
文献类型：
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作者：
D. Chang;We-Fu Chang;W. Keung
在一般的超对称理论下，计算了带电Higgs粒子对电子和中子电偶极矩的双圈贡献。新的贡献来源于带电希格斯玻色子与标量顶夸克或标量底夸克三线性耦合中的CP破坏。这些耦合没有直接受到严格的约束。在最小超对称标准模型中，我们发现了与第三代标量夸克相关的参数空间中相当大一部分的可观察效应。
We calculate the two-loop contributions to the electric dipole moments of the electron and the neutron mediated by charged Higgs in a generic supersymmetric theories. The new contributions are originated from the potential CP violation in the trilinear couplings of the charged Higgs bosons to the scalar-top or the scalar-bottom quarks. These couplings did not receive stringent constraints directly. We find observable effects for a sizable portion of the parameter space related to the third generation scalar-quarks in the minimal supersymmetric standard model.