GRK 2044: Mass and Symmetries after the Discovery of the Higgs Particle at the LHC

在2012年欧洲核子研究中心大型强子对撞机(LHC)发现希格斯玻色子的里程碑之后，关键的基本问题仍然没有得到回答：所发现的希格斯玻色子是否与标准模型(SM)的预测一致，它如何适用于扩展模型？SM在哪个能量下是有效的，我们关于弱电对称破缺的图景正确吗？在TeV尺度上有新的对称性和新的粒子吗？哪些粒子形成暗物质(DM)，它们如何适用于理论模型？在大型强子对撞机上能产生和检测到DM粒子吗？它们能在天体粒子物理实验中被直接探测到吗？计划中的研究培训小组的目标是在理论和实验物理的合作和相互作用中做出重大的和在许多地方领先的贡献，以回答这些悬而未决的关键问题。相互关联的研究活动属于下列领域：a)实验粒子物理学：分析由大型强子对撞机的ATLAS实验收集的数据，并为大型强子对撞机的高光度升级的ATLAS实验研究和开发探测器，以便精确地研究希格斯玻色子、电弱对称破缺和重要的关键过程，寻找新的粒子和对称性，特别是关于DM的性质。B)实验天体粒子物理学：对LNGS和CAST实验中的氙气数据进行分析，并为达尔文实验研究和开发探测器，以直接寻找DM的候选者。C)理论粒子物理学：用于研究希格斯粒子的性质、电弱对称破缺和测试SM之外的显式模型的精确预测以及领域理论概念和方法的发展。研究培训小组的结构化教育除了包括各种研究领域的专业化外，还包括实验和理论之间的知识和方法的转移，因此，不仅激发了自己研究项目的创造力，而且培养了学术和非学术职业道路的关键专业技能。此外，与欧洲核子研究中心的密切合作，与大型强子对撞机希格斯截面工作组的联系，以及弗莱堡在国际ATLAS、CAST和氙气实验方面的合作，为科学界最高级别的教育和研究以及联网奠定了良好的基础。

After the milestone of the discovery of the Higgs boson at the Large Hadron Collider (LHC) at CERN in2012 crucial basic questions remain still unanswered: Is the discovered Higgs boson in line with the Standard Model (SM) prediction, how does it fit into extended models? Up to which energy is the SM valid, and is our picture of electroweak symmetry breaking correct? Are there new symmetries and new particles at the TeV scale? Which particles form Dark Matter (DM), and how do they fit into theoretical models? Can DM particles be produced and detected at the LHC? Can they be detected directly in astroparticle physics experiments?The goal of the planned research training group is to make significant and in many places leading contributions to answer those open key questions in the cooperation and interplay of theoretical and experimental physics. The interconnected research activities belong to the following areas: a) Experimental particle physics: analysis of data collected by the ATLAS experiment at the LHC and detector research and development for the ATLAS experiment for the high-luminosity upgrade of the LHC for precision investigations of the Higgs boson, of electroweak symmetry breaking and important key processes, the search for new particles and symmetries in particular with respect to the nature of DM. b) Experimental astroparticle physics: analysis of data from the XENON at the LNGS and CAST experiments and detector research and development for the DARWIN experiment for the direct search for candidates for DM. c) Theoretical particle physics: precision predictions for the investigation of the nature of the Higgs particle, electroweak symmetry breaking and for testing explicit models beyond the SM and development of fieldtheoretical concepts and methods.The structured education in the research training group comprises, apart from specializations in the various research fields, the transfer of knowledge and methodologies between experiment and theory and, thus, does not only stimulate the creativity in the own research project, but also fosters key professional skills for an academic as well as a non-academic career path. Moreover, the strong engagement with CERN, the connection to the LHC Higgs Cross Section Working Group, as well as Freiburg's cooperationin international ATLAS, CAST, and XENON experiments oer an excellent basis for education and research at the highest possible level and networking within the scientific community.