Experimental Nuclear Physics Research

实验核物理研究

• 批准号: 0757960
• 负责人: Elizabeth Beise
• 金额: $ 73.5万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0757960&HistoricalAwards=false
• 关键词: Experimental; Nuclear; Physics; Research

Funds from this grant will be used to support our group's efforts in the projects in nucleon structure and in tests of fundamental symmetries. In the first year, we will be completing data analysis from the G0 experiment in which parity-violating electron scattering is used to determine the contributions of strange quarks to the proton's charge and magnetism. Later in the grant period we will participate in an experiment that uses muon pair production to probe the distribution of antiquarks in the proton (FNAL experiment E906). This latter measurement addresses a number of unanswered questions about the nonperturbative QCD structure of the proton, such as the degree of charge symmetry in proton's internal structure and the role of antiquarks in ground state properties of free and bound nucleons. Our group is also participating in experiments that use precision measurements of neutron beta decay to test fundamental symmetries. The broader impact of this group's research is primarily through providing outstanding research opportunities for both graduate and undergraduate students. Students are exposed to nuclear physics concepts, get hands-on experience developing hardware, make significant contributions to the experiments, and have the opportunity to visit and participate in programs at major national laboratories.

这笔赠款将用于支持我们小组在核子结构和基本对称性测试项目中的努力。在第一年，我们将完成G0实验的数据分析，在该实验中，宇称违反电子散射被用来确定奇异夸克对质子电荷和磁性的贡献。在资助期的后期，我们将参与一个使用μ子对产生来探测质子中反夸克分布的实验（FNAL实验E906）。后者的测量解决了一些未回答的问题的非微扰QCD结构的质子，如程度的电荷对称性在质子的内部结构和反夸克的作用在基态性质的自由和束缚核子。我们小组还参与了使用中子β衰变的精确测量来测试基本对称性的实验。该小组的研究的更广泛的影响主要是通过为研究生和本科生提供优秀的研究机会。学生接触到核物理概念，获得开发硬件的实践经验，为实验做出重大贡献，并有机会参观和参与主要国家实验室的项目。