次最小超对称标准模型的偏转Mirage传递机制实现及相关唯象

发布时间：2019-05-18 12:21

【摘要】：粒子物理的标准模型(SM)能将自然界中的电磁相互作用、强、弱相互作用统一起来。在过去几十年里,大量的精确实验成功地验证了标准模型理论。随着大型强子对撞机发现了125GeV的Higgs玻色子,标准模型关于粒子的最后一个预言也得到了证实。毫无疑问,标准模型理论是粒子物理学中最完美的理论之一。然而标准模型并不是一个终极理论,粒子物理中仍有许多问题不能在标准模型理论的框架中得到解决。例如,标准模型在Higgs质量的精细调节方面有着比较大的问题;标准模型也不能解释为什么中微子会有质量;另外,标准模型也不能提供暗物质候选者。标准模型可以看做是一种成功的低能有效理论,而在更高的能标处可能有新物理存在。低能超对称标准模型是标准模型的超对称扩充,它可以很好的解释标准模型(SM)的规范等级问题,能成功实现三种规范耦合的大统一,并且提供合适的暗物质候选者,解释宇宙中的重子不对称,所以许多物理学家认为它是TeV标度新物理的最好的候选者之一。但是新超对称粒子信号的匮乏似乎表明低能超对称理论和LHC实验不融洽,而且LHC数据已经对某些简单的超对称理论模型(如CMSSM等)有较严格的限制。本文主要是在广义Mirage传递机制中实现次最小超对称标准模型(NMSSM),并研究其唯象。文章主要包括以下几个方面:(1)反常传递需要一个额外的机制来处理-??B问题。次最小超对称标准模型(NMSSM)的工作框架能够自然而然的解决-??B问题。此外,NMSSM通过添加额外的树图贡献,能够更容易的解释125GeV的Higgs粒子质量。我们通过一种广义的混合modulus-anomaly传递机制,生成这样的次最小超对称(NMSSM)软破缺谱结构。(2)课题组在之前的工作中,详细讨论了在偏转的反常传递机制中引入媒介场-物质场相互作用时的超对称软破缺谱结构和低能唯象。我们发现在偏转的Mirage传递机制中引入媒介场,能对超对称软破缺谱有额外贡献。论文发现引入媒介场可能会给出混合gauge-modulus干涉项的贡献。通过在Mirage传递机制中引入媒介场,能更自由地选择物质场的模权。(3)论文讨论了广义的mirage传递中软破缺质量、三线性耦合项等的解析表达式;通过引入适当的媒介场及其相互作用形式,给出NMSSM的软破缺参数;文章也讨论了暗物质限制、muon的反常磁矩、理论的BG精细调节程度。文章也给出了相关数值分析。
[Abstract]:The standard model (SM) of particle physics can unify the electromagnetic interaction, strong and weak interaction in nature. In the past few decades, a large number of accurate experiments have successfully verified the standard model theory. With the discovery of 125GeV's Higgs boson by the large Hadron Collider, the last prediction of particles in the standard model has been confirmed. There is no doubt that the standard model theory is one of the most perfect theories in particle physics. However, the standard model is not an ultimate theory, and there are still many problems in particle physics that can not be solved in the framework of the standard model theory. For example, the standard model has a big problem in the fine regulation of Higgs quality; the standard model can not explain why neutrinos have mass; in addition, the standard model can not provide dark matter candidates. The standard model can be regarded as a successful low energy efficiency theory, and there may be new physical existence at higher energy standards. The low energy supersymmetric standard model is the supersymmetric extension of the standard model. It can well explain the specification level problem of the standard model (SM), successfully realize the great unity of the three kinds of specification coupling, and provide the suitable dark matter candidate. Explain the baryons asymmetry in the universe, so many physicists think it is one of the best candidates for new physics on the TeV scale. However, the lack of new supersymmetric particle signals seems to indicate that the low energy supersymmetry theory is not in harmony with LHC experiments, and LHC data have strict limitations on some simple supersymmetric theoretical models (such as CMSSM, etc.). In this paper, the subminimum supersymmetric standard model (NMSSM), is implemented in the generalized Mirage transfer mechanism and its phenomena are studied. This paper mainly includes the following aspects: (1) abnormal transmission needs an additional mechanism to deal with-B problem. The working framework of the subminimum supersymmetric standard model (NMSSM) can naturally solve the B problem. In addition, NMSSM can easily explain the Higgs particle mass of 125GeV by adding additional tree contributions. Through a generalized hybrid modulus-anomaly transfer mechanism, we generate such a subminimum supersymmetric (NMSSM) soft breaking spectral structure. (2) in the previous work of the research group, The supersymmetric soft breakdown spectral structure and low energy phenomena when the medium field-material field interaction is introduced into the abnormal transfer mechanism of deflection are discussed in detail. It is found that the introduction of media field into the deflected Mirage transfer mechanism can make an additional contribution to the supersymmetric soft breaking spectrum. It is found that the contribution of the mixed gauge-modulus interference term may be given by introducing the media field. By introducing the media field into the Mirage transfer mechanism, the modular weight of the material field can be selected more freely. (3) in this paper, the analytical expressions of soft breaking mass and trilinear coupling term in the generalized mirage transfer are discussed. By introducing the appropriate medium field and its interaction form, the soft breaking parameters of NMSSM are given, and the dark matter limitation, the abnormal magnetic moment of muon and the fine adjustment degree of BG theory are also discussed in this paper. The related numerical analysis is also given in this paper.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O572.2

【相似文献】