Study of the Electro-weak Structure of the Nucleon

核子电弱结构的研究

• 批准号: 1306376
• 负责人: Julie Roche
• 金额: $ 49.79万
• 依托单位: Ohio University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306376&HistoricalAwards=false
• 关键词: Study; Electro; weak; Structure; Nucleon

This award supports a three-year research program focusing on the study of the electro-weak structure of the nucleon using the electron beam at Jefferson Lab (JLab) as a probe. The medium-energy nuclear experimental program conducted by the PIs aims to obtain information which will help to answer the questions: "What is the internal landscape of the nucleon?" and "What are the key ingredients of a New Standard Model of particle physics?". The research program builds on the PIs previous work on the QWEAK and DVCS experiments and one of its highlights will be data taking on one of the first experiments of the JLab 12 GeV era. The goal of DVCS experiments is ultimately to provide a simultaneous spatial and momentum mapping of the internal structure of the proton. Roche is a co-spokesperson of two experiments dedicated to the study of GPDs in Hall A at JLab, one of which is scheduled to take data as early as 2014. Another aspect of the program is precision measurement of interactions which can be reliably predicted by the Standard Model, for example the measurement of the rate of parity violation in electron scattering. The PIs will continue their data acquisition and analysis software work up to publication of the results of the completed QWEAK experiment and prepare for the next generation of such experiments at JLab: the MOLLER experiment.The broader impacts of the program are twofold: training the next generation of scientists and raising the profile of minority scientists. The research proposed by the PIs is performed in part by two graduate students. In addition, the PIs will carry out projects in which undergraduate students can meaningfully participate. Finally, this award supports the research of a woman physicist whose residence on campus and mentoring activities serve to support and encourage graduate and undergraduate women in physics.

该奖项支持一项为期三年的研究计划，重点研究在杰斐逊实验室（JLab）使用电子束作为探针研究核子的电弱结构。由PIs进行的中能量核实验计划旨在获得有助于回答以下问题的信息：“核子的内部景观是什么？”和“粒子物理学新标准模型的关键成分是什么？”该研究计划建立在PIs之前在QWEAK和DVCS实验上的工作基础上，其亮点之一将是JLab 12 GeV时代首批实验之一的数据。DVCS实验的最终目标是同时提供质子内部结构的空间和动量映射。罗氏是JLab a厅两个致力于研究gpd的实验的联合发言人，其中一个计划最早于2014年收集数据。该程序的另一个方面是精确测量相互作用，这些相互作用可以通过标准模型可靠地预测，例如电子散射中宇称破坏率的测量。pi将继续他们的数据采集和分析软件工作，直到完成QWEAK实验的结果发表，并为JLab的下一代实验：MOLLER实验做准备。该项目的广泛影响是双重的：培养下一代科学家和提高少数族裔科学家的形象。pi提出的研究部分是由两位研究生完成的。此外，pi将开展本科生可以有意义地参与的项目。最后，该奖项支持一位女物理学家的研究，她在校园的住宿和指导活动有助于支持和鼓励研究生和本科生的女性物理学。