Meson Physics at Arizona State University

亚利桑那州立大学介子物理学

基本信息

批准号：
0969201
负责人：
Barry Ritchie
金额：
$ 51万
依托单位：
Arizona State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2010
资助国家：
美国
起止时间：
2010-09-01 至 2013-11-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0969201&HistoricalAwards=false
关键词：
Meson Physics Arizona State University

项目摘要

Since our knowledge of the excited states for nucleons and mesons still possess major gaps and ambiguities, any description of those particles faces severe handicaps. This research and education program will utilize intense polarized beams of high energy photons in Hall B at Jefferson Lab to reveal new details of the structure of protons and neutrons by isolating the distribution of angular momenta and spin among the quarks and gluons within them. These data are absolutely necessary for progress in understanding the structure of the proton, and are specifically aimed at enabling achievement of one of the NSAC critical milestones for hadronic physics. While advancing discovery and understanding, the project incorporates teaching, training, and learning through the integrated involvement of undergraduate and graduate students and postdoctoral researchers. Participating students and postdoctoral personnel will be trained in the techniques of experimental nuclear and particle physics, as well as be coached and encouraged to participate and make presentations at professional meetings. The work will strengthen existing collaborative ties between ASU and institutions around the world. The group will continue to maintain and operate the tagged photon facility at Jefferson Lab for the user community. Results will be disseminated through presentations at international meetings and publications in high-visibility journals. Lay descriptions will be provided on the group's web site and the ASU Physics Department newsletter.

由于我们对核子和介子激发态的了解仍然存在重大差距和模糊性，因此对这些粒子的任何描述都面临着严重的障碍。该研究和教育项目将利用杰斐逊实验室 B 厅的强偏振高能光子束，通过隔离质子和中子内夸克和胶子之间的角动量和自旋分布，揭示质子和中子结构的新细节。这些数据对于理解质子结构的进展是绝对必要的，并且专门旨在实现 NSAC 强子物理学的关键里程碑之一。在促进发现和理解的同时，该项目通过本科生、研究生和博士后研究人员的综合参与，将教学、培训和学习结合起来。参与的学生和博士后人员将接受实验核物理和粒子物理技术的培训，并接受指导和鼓励参加专业会议并进行演讲。这项工作将加强亚利桑那州立大学与世界各地机构之间现有的合作关系。该小组将继续为用户社区维护和运营杰斐逊实验室的标记光子设施。结果将通过在国际会议上的演讲和在高知名度期刊上发表的出版物来传播。外行描述将在该小组的网站和亚利桑那州立大学物理系时事通讯上提供。