Parity Violating Electron Scattering Measurements at Jefferson Lab

杰斐逊实验室的宇称破坏电子散射测量

• 批准号: 1206056
• 负责人: Kathleen Johnston
• 金额: $ 12.48万
• 依托单位: Louisiana Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1206056&HistoricalAwards=false
• 关键词: Parity; Violating; Electron; Scattering; Measurements

The main thrust of the research program of the Louisiana Tech (LaTech) Particle Physics Group (PPG) involves parity violating electron scattering, a program of which will challenge our understanding of nucleon structure, probe the dynamics of QCD symmetry breaking, and provide precision tests of the Standard Model. Four parity violating electron scattering programs at Thomas Jefferson National Accelerator Facility (TJNAF), the G0, Qweak, PVDIS and a future Moller measurement after the 12 GeV TJNAF upgrade, represent parity violation measurements covering a broad range of momentum transfers from 0.03 - 2.0 (GeV/c) squared. These measurements will investigate ground state nucleon properties and properties of the nucleon during its transition to excited states, provide precision tests of the Standard Model, and constrain weak quark couplings to unprecedented levels. Each of these experiments is sensitive to unique and interesting physics, and together constitute a program of parity violation experiments in which the Louisiana Tech PPG group plays a critical role. This award will allow the LaTech PPG group to continue to make major contributions to physics research, transfer technology from basic science to engineering applications, and enhance the educational opportunities for undergraduate students, local high school students and teachers, providing an excellent avenue for recruiting students into scientific disciplines.

路易斯安那理工大学（LaTech）粒子物理小组（PPG）的主要研究项目涉及违反奇偶性的电子散射，该项目将挑战我们对核子结构的理解，探索QCD对称破缺的动力学，并提供标准模型的精确测试。Thomas Jefferson国家加速器设施（TJNAF）的四个违反宇称的电子散射程序，G0, Qweak， PVDIS和未来在12 GeV TJNAF升级后的Moller测量，代表了涵盖0.03 - 2.0 （GeV/c）平方范围内动量转移的宇称违反测量。这些测量将研究基态核子的性质和核子向激发态过渡期间的性质，提供标准模型的精确测试，并将弱夸克耦合约束到前所未有的水平。这些实验中的每一个都对独特而有趣的物理学很敏感，并且共同构成了一个宇称违反实验项目，路易斯安那理工大学PPG小组在其中发挥了关键作用。该奖项将允许LaTech PPG集团继续为物理研究做出重大贡献，将技术从基础科学转移到工程应用，并增加本科生，当地高中学生和教师的教育机会，为招收学生进入科学学科提供良好的途径。