Phenomenological Studies of the Minimal Supersymmetric Standard Model and the Extensions.

超对称标准模型(SUSY SM)是粒子物理标准模型之外最受关注的模型之一。由于质子的稳定性，该模型预言了一个稳定的超对称粒子，它是宇宙中暗物质的候选者。这一模型也与大统一理论(GUTS)兼容。弱电精密测试更倾向于轻量级的希格斯玻色子。现在许多研究人员都在研究这一模型，并期待在不久的将来发现它。我们研究了这个模型的现象学。我们的研究之一是探测中性微诺暗物质的理论研究。最轻的中性微诺是SUSY SM中动机良好的暗物质候选者。传统的直接探测中性微子暗物质的方法是利用原子核的弹性散射。我们对过程的辐射修正进行了评估，发现当中性诺是类WINO或类Higgsino时，截面有下界。我们还讨论了检测…的可能性更多的暗物质使用电子束缚环。当中性电子和选择电子有微小的质量差异时，这种方法可能会起作用。我们还考虑了间接探测，即观测宇宙中中性诺湮灭产生的反常宇宙线。我们发现，在中性子具有弱电荷的情况下，弱电相互作用的非微扰效应在湮没截面中是不可忽略的，例如在类wino或类Higgsino中立子的情况下，夸克和斯普顿质量项可能会破坏味道对称性，并且在超对称SM中预测了味道变化中性电流(FCNC)过程。这些过程对超对称破裂的起源物理很敏感，也对超对称SM以外的模型很敏感，比如中微子质量和超对称内脏的起源。我们在夸克和斯普顿质量项中讨论了由味道破坏引起的强子和轻子电偶极矩。我们发现，根据模型参数的不同，它们比FCNC工艺具有更高的灵敏度。我们还从超精密加工的角度讨论了未来电火花加工实验的前景。较少

The supersymmetric standard model (SUSY SM) is one of the well-motivated models beyond the standard model of particle physics. This model predicts a stable SUSY particle due to stability of proton, and it is a candidate of the dark matter in the Universe. This model is also compatible with the Grand Unified Theories (GUTs). The electroweak precision tests prefer the light Higgs boson. Now many researchers are studying this model and expect it to be discovered in near future. We studied phenomenology of this model.One of our researches is theoretical studies of detection of the neutralino dark matter. The lightest neutralino is a well-motivated dark matter candidate in the SUSY SM. Traditional direct detection of the neutralino dark matter uses the elastic scattering with nucleus. We evaluated the radiative correction to the process, and found that the cross sections have lower bounds when the neutralino is wino-like or Higgsino-like. We also discussed a possibility of detection of the … More dark matter using electron strage ring. This method might work when the neutralino and selectron have a tiny mass difference. We also considered the indirect detection, which is observation of anomalous cosmic rays produced by the neutralino annihilation in the Universe. We found that the non-perturbative effect by the electroweak interaction is not non-negligible in the annihilation cross section when the neutralino has weak charge, such as in cases of the wino-like or Higgsino-like neutralino.The squark and slepton mass terms may violate the flavor symmetries, and the flavor changing neutral current (FCNC) processes are predicted in the SUSY SM. The processes are sensitive to physics of origin of the SUSY breaking and also models beyond the SUSY SM, such origin of the neutrino masses and SUSY GUTs. We discussed hadronic and leptonic lectric dipole moments induced by the flavor violation in the squark and slepton mass terms. We found that they have higher sensitivities than FCNC processes, depending on the parameters of the models. We also discussed prospects of future EDM experiments from a point of view of the SUSY GUTs. Less