GRK 2149: Strong and Weak Interactions - from Hadrons to Dark Matter

在“强与弱相互作用——从强子到暗物质”的研究培训小组中，理论和实验核、粒子和天体粒子物理学家以一种独特的方式共同研究粒子物理学的高度热门方面。由于研究培训小组的第一个资助期，这种合作已经得到明显加强。因此，第二个资助期的战略严格依赖于第一阶段在研究和资格方案方面的经验。在强相互作用领域，提出的问题具有高度复杂性，方法需要通过精确的测量和预测。这方面密切联系的例子是冷核和致密核物质中的部分子分布以及热夸克-胶子等离子体和介子的性质。它们现在被重夸克的束缚态（夸克）所补充，不仅在大型强子对撞机上进行分析，特别是用ALICE，也用BESIII，以及统计模型，甚至在微扰和非微扰理论方法之间建立了更紧密的联系。在弱相互作用领域，问题和模型更具推测性，但选择它们的动机和高发现潜力。在寻找超越标准模型的新物理学时，暗物质、中微子和味道破坏是特别交织在一起的。这一领域的新发展涉及中微子质量实验KATRIN的调试，用于测量β衰变谱，其精度达到了前所未有的水平，使用XENON1T/nT进行世界领先的暗物质直接搜索，中微子天文台冰立方，它现在正在加强与天体物理学的联系，以及在这一领域中微扰和非微扰理论方面的结合。研究的问题现在已经，将来肯定也会吸引优秀的学生，也因为这些项目的动机不仅来自核物理和粒子物理，而且来自天体物理学和宇宙学。对于我们的博士论文组合来说，物理学不同分支的接口以及理论家和实验家之间的密切合作是至关重要的。

In the Research Training Group “Strong and Weak Interactions – from Hadrons to DarkMatter” theoretical and experimental nuclear, particle, and astroparticle physicists investigatetogether in a unique way highly topical aspects of particle physics. This cooperationhas already been visibly strengthened owing to the first funding period of the ResearchTraining Group. The strategy for the second funding period therefore builds stringentlyon the experience of the first phase both in the research and in the qualificationprogramme. In the area of strong interactions, the posed questions are characterisedby their high complexity, the methods through precision measurements and predictions.Examples of the close connection in this area are parton distributions in cold and densenuclear matter and the properties of the hot quark-gluon plasma and of mesons. Theyare now complemented by bound states of heavy quarks (quarkonia), analyses not onlyat and for the LHC, especially with ALICE, but also with BESIII, and statistical models aswell as even closer ties between perturbative and non-perturbative theoretical methods.In the field of weak interactions, the questions and models are more speculative, butselected for their motivation and high discovery potential. In the search for new physicsbeyond the Standard Model, dark matter, neutrinos and flavour violation are particularlyintertwined. New developments in this area concern the commissioning of the neutrinomass experiment KATRIN for measurements of the beta decay spectrum with previouslyunattained precision, the world’s leading direct search for dark matter with XENON1T/nT, the neutrino observatory IceCube, which is now strengthening the link to astrophysics,as well as the combination of perturbative and non-perturbative theoretical aspects alsoin this area. The investigated problems do already now and will certainly also in the futureattract excellent students, also because the motivations of these projects not onlycome from nuclear and particle physics, but also from astrophysics and cosmology. Forour portfolio of doctoral theses, the interfaces of different branches of physics and theclose cooperation among theorists and experimentalists are of crucial relevance.