Flavour and CP physics in supersymmetric theories

超对称理论中的风味和 CP 物理

• 批准号: 169660687
• 负责人: Professor Dr. Werner R. Porod
• 金额: --
• 依托单位: Fakultät für Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/169660687?language=en
• 关键词: Flavour; CP; physics; supersymmetric; theories

With the start of the Large Hadron Collider LHC (CERN, Geneva) in September 2008 a new era of elementary particle physics is arising. Most likely, at the LHC signals of physics beyond the Standard Model of particle physics will be discovered. Supersymmetry is one of the most promising extensions of the Standard Model. The search for supersymmetric particles has a very high priority at LHC.The research project “Flavour physics and CP violation in supersymmetric theories” is a joint research project of the University of Vienna (Austria) and the University of Würzburg (Germany). Up to now most studies concerning supersymmetry at future colliders have been performed in the Minimal Supersymmetric Standard Model under the assumption that flavour mixing can be neglected and that R-parity is conserved. The main purpose of the present research project is to explore the flavour sector of supersymmetric extensions of the Standard Model, with and without R-parity conservation. We plan to investigate on the one hand the Minimal Supersymmetric Standard Model with intergenerational mixing in the supersymmetry breaking terms and on the other hand models with R-parity violation. In a systematic study we want to consider the most general case including CP violating phases as well as flavour violating parameters. In order to work out the implications of flavour and CP violating parameters for the determination of the underlying supersymmetric parameters, we are going to analyze in a systematic way production and decay processes of supersymetric particles at colliders. We want to take into account the existing experimental and theoretical constraints for the flavour violating parameters and the constraints from the dark matter density. In spite of the severe restrictions we expect large flavour violating signals in the supersymmetric production and decay processes. Therefore, the results of the research project “Flavour physics and CP violation in supersymmetric theories” will play an important role for the experiments at the LHC and other future colliders.

随着大型强子对撞机（欧洲核子研究中心，日内瓦）于2008年9月启动，基本粒子物理学的新时代正在兴起。最有可能的是，在LHC的信号物理学超越粒子物理学的标准模型将被发现。超对称性是标准模型最有前途的扩展之一。在LHC中，寻找超对称粒子是一项非常重要的工作。“超对称理论中的味物理和CP破坏”研究项目是维也纳大学（奥地利）和维尔茨堡大学（德国）的联合研究项目。到目前为止，大多数关于未来对撞机超对称性的研究都是在最小超对称标准模型中进行的，假设味道混合可以忽略，R宇称是守恒的。本研究项目的主要目的是探索标准模型的超对称扩展的风味部门，有和没有R-宇称守恒。我们计划一方面研究在超对称破缺项下具有代际混合的最小超对称标准模型，另一方面研究具有R-宇称破坏的模型。在一个系统的研究中，我们要考虑最一般的情况下，包括CP违反阶段，以及味违反参数。为了解决味参数和CP破坏参数对确定超对称参数的影响，我们将系统地分析超对称粒子在对撞机上的产生和衰变过程。我们要考虑到现有的实验和理论约束的味道违反参数和暗物质密度的约束。尽管有严格的限制，我们预计在超对称的产生和衰变过程中会有大的味道违反信号。因此，“超对称理论中的味物理和CP破坏”研究项目的结果将在LHC和其他未来对撞机的实验中发挥重要作用。

项目成果

Stability of the CMSSM against sfermion VEVs

• DOI: 10.1007/jhep12(2013)103
• 发表时间: 2013-09
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: J. E. Camargo-Molina;B. O'Leary;W. Porod;F. Staub

Vevacious: a tool for finding the global minima of one-loop effective potentials with many scalars

• DOI: 10.1140/epjc/s10052-013-2588-2
• 发表时间: 2013-07
• 期刊: The European Physical Journal C
• 作者: J. E. Camargo-Molina;B. O'Leary;W. Porod;F. Staub

Flavour violating bosonic squark decays at LHC

• DOI: 10.1142/s0217751x14500353
• 发表时间: 2012-12
• 期刊: International Journal of Modern Physics A
• 影响因子: 1.6
• 作者: K. Hidaka;A. Bartl;E. Ginina;H. Eberl;W. Majerotto;Bjorn Herrmann;W. Porod

General MSSM signatures at the LHC with and without R-parity

• DOI: 10.1103/physrevd.86.035021
• 发表时间: 2012-05
• 期刊: Physical Review D
• 影响因子: 5
• 作者: H. Dreiner;Florian Staub;Avelino Vicente;W. Porod