arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.03577hep-ex
收藏

在sqrt(s)= 7和8时pp碰撞中CMS搜索的唯象MSSM解释TeV

Phenomenological MSSM interpretation of CMS searches in pp collisions at sqrt(s) = 7 and 8 TeV

CMS Collaboration

摘要:

在唯象最小超对称标准模型(pMSSM)的框架下解释了CMS合作组对新物理学的贡献。在这项研究中使用的数据样本收集在sqrt(s)= 7和8 TeV,并有积分亮度的5.0和19.5反飞秒,分别。一个全球性的贝叶斯分析进行,结合广泛的CMS超对称搜索的结果,以及其他实验的约束。由于pMSSM包含了几个动机良好的假设,将MSSM的120个参数减少到只有19个参数定义在电弱尺度上,因此可以以相对简单的方式评估研究结果。大约一半的pMSSM模型点在一个潜在的可访问的子空间被排除在外,包括所有的pMSSM模型点的胶子质量低于500 GeV,以及模型的夸克质量小于300 GeV。电荷伴子和中性伴子质量低于200 GeV的模型是不受欢迎的,但根据所考虑的分析,不能排除模型点的质量范围。pMSSM参数空间中的非排除区域的物理过程和关键观测量的特点,并为未来的搜索影响进行了讨论。

英文摘要:

Searches for new physics by the CMS collaboration are interpreted in the framework of the phenomenological minimal supersymmetric standard model (pMSSM). The data samples used in this study were collected at sqrt(s) = 7 and 8 TeV and have integrated luminosities of 5.0 and 19.5 inverse-femtobarns, respectively. A global Bayesian analysis is performed, incorporating results from a broad range of CMS supersymmetry searches, as well as constraints from other experiments. Because the pMSSM incorporates several well-motivated assumptions that reduce the 120 parameters of the MSSM to just 19 parameters defined at the electroweak scale, it is possible to assess the results of the study in a relatively straightforward way. Approximately half of the model points in a potentially accessible subspace of the pMSSM are excluded, including all pMSSM model points with a gluino mass below 500 GeV, as well as models with a squark mass less than 300 GeV. Models with chargino and neutralino masses below 200 GeV are disfavored, but no mass range of model points can be ruled out based on the analyses considered. The nonexcluded regions in the pMSSM parameter space are characterized in terms of physical processes and key observables, and implications for future searches are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑