Parity Violating Electron Scattering and Nucleon Structure Studies at Jefferson Lab

现在一个公认的事实是，核子、质子和中子是由更基本的粒子——夸克组成的。这笔拨款将支持杰斐逊实验室目前和未来的实验，以研究质子和中子的夸克结构。特别是，这些实验将探索电子如何从质子和其他电子中散射，以一种测试物理学基本理论模型（称为标准模型）的方式。这些实验将有助于推动核物理和粒子物理领域的发展，并为从事这些项目的研究生和本科生提供世界一流的教育。在由路易斯安那理工大学小组参与的杰弗逊实验室的电子散射实验中，许多新的物理观测将被测量。从这些测量中获得的物理学包括对弱相互作用固有特性的测量，使我们能够测试粒子和相互作用标准模型的预测，特别是弱相互作用参数。额外的测量将进一步探测质子和中子的内部结构，为现有理论模型的预测提供检验。

It is now a well-established fact that nucleons, protons and neutrons, are made up of more elementary particles called quarks. This grant will support present and future experiments at Jefferson Lab to investigate the quark structure of protons and neutrons. In particular, these experiments will explore how electrons scatter from the proton and from other electrons in a way which will test the fundamental theoretical model of physics, called the Standard Model. These experiments will help to advance the field of nuclear and particle physics, as well as provide a world class education to the graduate and undergraduate students working on those projects.In the electron scattering experiments at Jefferson Laboratory in which the Louisiana Tech group is involved, many new physical observables will be measured. The physics available from these measurments include measurements of inherent properties of the weak interaction, allowing us to test predictions of the Standard Model of Particles and Interactions, and in particular the weak interaction parameter. Additional measurements will further probe the internal structure of protons and neutrons, providing tests of predictions from existing theoretical models.