Search for new hadrons and study of hadron spectroscopy at BESIII and PANDA

BESIII 和 PANDA 寻找新强子并研究强子光谱

• 批准号: 449164809
• 负责人: Professor Dr. Ulrich Wiedner
• 金额: --
• 依托单位: National Natural Science Foundation of China
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/449164809?language=en
• 关键词: Search; new; hadrons; study; hadron

This project is tailored to enable two groups, one from Institute of High Energy Physics (IHEP) in Beijing (China) and the other from the Ruhr-University Bochum (RUB, Germany) to work together in the field of hadron physics. The BESIII experiment is currently one of the most successful experiments in the field of hadron physics. Its results like the careful investigation of newly, completely unexpected particles pave the way for a much deeper understanding of the strong interaction.The coming years with an additional upgrade of energy and luminosity can rightfully be expected to be extremely fruitful in terms of results. This is a continuation of the FG2359 which ends in 2021 with a new scope of the program taking advantage of the newly achievable data sets. At the same time, not all questions posed by new results or the non-perturbative part of the strong interaction can be answered conclusively. This is the point where the new PANDA experiment at the FAIR facility in Germany will pick up in a few years from now. PANDA will study the antiproton-proton annihilation process compared to the electron-positron annihilation at BESIII. The Bochum group received only funding from BMBF for the construction of hardware for PANDA but not for the preparation of physics. Since each of the production processes of particles have their individual advantages and disadvantages, their combination is an ideal case. We plan in the next years to take data sets at BESIII to study so-called QCD exotics which are present due to the specific unique features of the strong interaction. The presence of the highly respected IHEP group and Chinese universities together with the international partner at RUB will be a key in making this a success. The presence of the IHEP group directly at the experiment assures a continuous first-hand flow of results and information among the partners, allowing for a most effective data-taking plan and speedy high-quality analysis. The long-standing expertise of the RUB group in hadron physics in different experiments over the past 30 years complements this nicely. Existing analysis packages like the partial-wave analysis package PAWIAN at RUB will be used to analyze commonly the data and being further developed for a future use at PANDA. Techniques, like an efficient energy reconstruction of electromagnetic particles in a calorimeter, developed and tested at BESIII will be transferred and utilized at PANDA. The RUB group is one of the key groups for the hardware construction of the PANDA electromagnetic calorimeter and the IHEP group is a strong partner in the development of offline software and the readout of the PANDA-EMC, again creating necessary fruitful synergies. The PIs, Prof. Xiaoyan Shen and Prof. Ulrich Wiedner have a long-standing track record from several leading experiments in hadron physics and two key participants in the project had already worked successfully together as conveners of the light hadron group in BESIII.

这个项目是为了使两个小组，一个来自北京高能物理研究所(中国)，另一个来自鲁尔大学波鸿(RUB，德国)，在强子物理领域进行合作。BESIII实验是目前强子物理领域最成功的实验之一。它的结果，比如对新的、完全意想不到的粒子的仔细研究，为更深入地理解这种强相互作用铺平了道路。随着能量和光度的进一步升级，未来几年可以理所当然地在结果方面取得非常丰硕的成果。这是FG2359的延续，FG2359将于2021年结束，该计划的新范围利用了新可实现的数据集。同时，并不是所有由新结果或强相互作用的非微扰部分提出的问题都能得到确凿的答案。这就是几年后在德国展会设施进行的新熊猫实验将会加快的阶段。熊猫将在BESIII上研究反质子-质子湮没过程与电子-正电子湮没过程。波鸿集团只从BMBF获得资金，用于为熊猫建造硬件，但没有用于物理准备。由于颗粒的每一种生产工艺都有各自的优缺点，它们的结合是理想的情况。我们计划在未来几年利用BESIII的数据集来研究所谓的QCD奇异现象，这些现象是由于强相互作用的特定独特特征而存在的。备受尊敬的IHEP集团和中国大学以及RUB的国际合作伙伴的参与将是这次成功的关键。IHEP小组直接参加实验确保了合作伙伴之间持续的第一手结果和信息流动，从而实现了最有效的数据采集计划和快速高质量的分析。在过去30年的不同实验中，RUB小组在强子物理方面的长期专业知识很好地补充了这一点。现有的分析程序包，如RUB的分波分析程序包PAWIAN，将用于对数据进行通用分析，并正在进一步开发，以供未来在熊猫使用。在BESIII开发和测试的技术，如在热量计中对电磁粒子进行有效的能量重建，将在熊猫身上转移和使用。RUB小组是熊猫电磁量热仪硬件建设的关键小组之一，IHEP小组是离线软件开发和PANDA-EMC读数的强大合作伙伴，再次创造了必要的富有成效的协同效应。PIs沈晓燕教授和Ulrich Wiedner教授在强子物理方面的几个领先实验中拥有长期的记录，该项目的两个关键参与者已经作为BESIII的轻强子群召集人成功地合作过。