RUI: Studies of Heavy Quarkonium Spectroscopy

RUI：重夸卡铵光谱研究

• 批准号: 0855681
• 负责人: Todd Pedlar
• 金额: $ 13.5万
• 依托单位: Luther College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855681&HistoricalAwards=false
• 关键词: RUI; Studies; Heavy; Quarkonium; Spectroscopy

From 1979 to 2008 CESR collided electron and positron beams, producing a spray of particles observed by the CLEO detector. Together, CESR and CLEO revealed the important properties of the bottom and charm quarks and the tau lepton. The last years of operation were dedicated to the charm quark in a program known as CLEO-c. The CLEO-c data, now under analysis, delve further into the mysteries of the charm quark, and provide important new information about the strong force, which binds protons and neutrons and governs quark behavior. In parallel, LEPP theorists are developing new techniques for calculating strong force phenomena. Some apply the power of computers to the strong force using so-called lattice gauge theory techniques, while others seek patterns that relate disparate strong interaction processes. This investigator proposes to carry out studies of charmonium and bottomonium spectroscopy with the data collected with the CLEO experiment at Cornell. These measurements are important to the understanding of strong interactions. The investigator has had a long and important involvement in the CLEO experiment. Having now moved to Luther College in Iowa, he proposes to continue his work on the analysis of the CLEO-c data, with the involvement of undergraduate students. The investigator is an expert in the area of charmonium and bottomonium physics, hence combined with his long term connection with the experiment is well positioned to carry out a successful program of analysis of the data. The proposed program of measurements of charmonium spectra and the connection with the XYZ states found at the B factories is well motivated and the CLEO-c data is likely to yield unique information in this area. The study of quarkonium states proposed by the investigator is important to the understanding of strong interactions and to the advancement of knowledge of particle physics. The data analysis plan outlined in the proposal provides an excellent opportunity for the involvement of undergraduates in research at a 4-year college.Marvin GoldbergPOMPS/PHY/EPP

从1979年到2008年，CESR的电子束和正电子束相互碰撞，产生了CLEO探测器观察到的粒子喷雾。CESR和CLEO一起揭示了底夸克、粲夸克和tau轻子的重要性质。最后几年的操作是在一个被称为CLEO-c的项目中致力于粲夸克。目前正在分析的CLEO-c数据将进一步探究粲夸克的奥秘，并提供有关强作用力的重要新信息。强作用力将质子和中子结合在一起，并支配着夸克的行为。与此同时，LEPP理论学家正在开发计算强作用力现象的新技术。一些人使用所谓的晶格规范理论技术将计算机的能力应用于强作用力，而另一些人则寻求将不同的强相互作用过程联系起来的模式。本研究拟利用康奈尔大学CLEO实验收集到的数据，开展charmonium和bottomonium光谱的研究。这些测量对于理解强相互作用很重要。这位研究者长期参与了CLEO实验。现在他已经搬到了爱荷华州的路德学院，他建议在本科生的参与下继续他对CLEO-c数据的分析工作。研究人员是铯和底铵物理领域的专家，因此，结合他与实验的长期联系，他很好地完成了一个成功的数据分析计划。所提出的谐波光谱测量方案以及与B工厂发现的XYZ态的联系是很有动机的，CLEO-c数据可能在这一领域产生独特的信息。研究者提出的夸克态的研究对强相互作用的理解和粒子物理知识的进步具有重要意义。提案中概述的数据分析计划为本科生参与四年制大学的研究提供了一个极好的机会。马文GoldbergPOMPS /体育/人民党