CP-violating lepton asymmetries from B decays and their implication for supersymmetric flavor models
CP-violating lepton asymmetries from B decays and their implication for supersymmetric flavor models
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DOI：
10.1016/s0550-3213(98)00766-4
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发表时间：
1998-07
期刊：
影响因子：
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通讯作者：
L. Randall;S. Su
中科院分区：
文献类型：
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作者：
L. Randall;S. Su
在标准模型中，来自Bd和Bs的轻子和双轻子电荷不对称性被预测为很小，而新的物理学可以显着增加它们的值。在本文中，我们探讨使用轻子不对称性作为超对称理论的味结构的探针。特别是，我们确定各种模型的参数的敏感性。我们发现，在许多有趣的模型，试图解决超对称的味道问题，混合结构是这样的，它可能会发现新的物理。预测是依赖于模型的;在BS和BD系统中进行测量，人们可以希望约束风味物理模型，特别是一旦检测到方形并测量其质量。因此，轻子电荷不对称性可以被用作寻找新物理学和区分味问题的潜在解决方案的替代手段。它们之所以有趣，正是因为它们在标准模型中很小，因此必然是新物理学的证据。
The lepton and dilepton charge asymmetries from Bdand Bsare predicted to be small in the standard model, whereas new physics could increase their values significantly. In this paper, we explore the use of the lepton asymmetries as a probe of the flavor structure of supersymmetric theories. In particular, we determine the sensitivity to parameters of various models. We find that in many interesting models which attempt to address the supersymmetric flavor problem, the mixing structure is such that it could be possible to detect new physics. The predictions are model dependent; with a measurement in both the Bsand Bdsystems one can hope to constrain the flavor physics model, especially once squarks are detected and their masses measured. Thus, lepton charge asymmetries can be used as an alternative means of searching for new physics and distinguishing among potential solutions to the flavor problem. They are interesting precisely because they are small in the standard model and are therefore necessarily evidence of new physics.