Factorization and Quark Imaging in Exclusive Reactions

排他反应中的因式分解和夸克成像

• 批准号: 1019521
• 负责人: Tanja Horn
• 金额: $ 30.62万
• 依托单位: Catholic University of America
• 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: 2010-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1019521&HistoricalAwards=false
• 关键词: Factorization; Quark; Imaging; Exclusive; Reactions

This project covers a research program of fundamental importance for our understanding of the structure of matter and the origin of mass. The focus is on experimental investigations of hadron structure through exclusive production and detection of a single meson or photon. Such processes allow us to gain both a quantitative description and a visualization (tomographic image) of the behavior of strongly interacting systems. This is achieved through the language of Generalized Parton Distributions (GPDs), which can be measured in a regime where the hard scattering of the probe on a single quark can be factorized from the residual soft interaction that carries the information about the GPDs. Thus, tests of factorization in the kinematics of Jefferson Lab, both today and after the 12 GeV energy upgrade, are essential for the interpretation of GPD data, and in turn for our understanding of nucleon structure.The participation of postdoctoral researchers, graduate students, and undergraduate students is an integral part of the project, providing young scientists with opportunities to further their training and education. These will include learning nuclear physics concepts, getting hands-on experience in development of hardware and software, as well as participating in and contributing to cutting edge experiments at a major national laboratory, providing exposure to a broad international scientific community. The PI has considerable experience working with minority students, and by providing a female role model, she could encourage women to pursue advanced studies in physics.

该项目涵盖了一项对我们对物质结构和质量起源的理解至关重要的研究计划。 重点是通过独家生产和检测单个介子或光子的独家生产和检测对强子结构的实验研究。 这样的过程使我们能够获得强烈相互作用系统行为的定量描述和可视化（断层扫描图像）。 这是通过广义Parton分布（GPD）的语言来实现的，该语言可以在一个Quark上的探针的硬散射中进行测量，从而将探针的硬散射从带有GPD的信息的残留软相互作用中分配。 因此，在今天和12 GEV能源升级后的杰斐逊实验室运动学中的分解测试对于解释GPD数据至关重要，而对于我们对Nucleon结构的理解，博士后研究人员，研究生，研究生和本科生的参与是该项目的一部分，可以进一步提供培训和教育。 这些将包括学习核物理概念，在硬件和软件开发方面获得动手经验，以及在一个主要的国家大型实验室参与并为尖端实验做出贡献，从而提供了广泛的国际科学界。 PI具有与少数族裔学生合作的丰富经验，并且通过提供女性榜样，她可以鼓励妇女从事物理学的高级研究。