RUI: Studies of Parton Distributions using Kaons at Jefferson Lab

众所周知，质子和中子是由夸克和胶子组成的，夸克和胶子构成了质子和中子的子结构。该项目的目标是测量夸克的空间分布和动量，从而提供核介质中夸克的三维地图。这些知识为我们从内部成分的动力学角度理解核物质提供了基础。利用这些信息，理论模型展示了如何利用质子和中子的组成部分来建立其基本的内在属性，即它的总体尺寸或半径，以及量子力学自旋。该项目由PI和杜肯大学的本科生参与研究，旨在使用杰弗逊实验室的CLAS12半包容性生产的介子来研究奇怪的海洋。来自eg2实验的6 GeV Kaon数据的物理分析和12 GeV实验的软件开发项目将在Duquesne大学进行，而硬件和探测器测试将在Jefferson实验室进行。PI正在领导目前正在建造的混合环成像切伦科夫（RICH）探测器的校准。该探测器将用于3 ~ 8 GeV/c的动量范围内的强子识别。本科生在这个项目中扮演着不可或缺的角色，这为他们提供了在课堂之外进一步接受培训和教育的机会。这将包括：在现代粒子物理探测器，高科技快速电子和科学数据分析的设计，组装和测试方面获得经验。

It is well known that protons and neutrons are made from constituents, called quarks and gluons, which give substructure to these particles. The goal of this project is to make measurements of the spatial distributions and the momenta of the quarks that provide a three-dimensional map of quarks in the nuclear medium. This knowledge provides the basis of our understanding of nuclear matter in terms of the dynamics of their internal constituents. Using this information, theoretical models show how the constituent parts of the proton and neutron can be used to build up its fundamental intrinsic properties, i.e. its overall size, or radius, and quantum mechanical spin. This project engages the PI and Duquesne University's undergraduate students in research aiming to study the strange sea using semi-inclusive production of Kaons with CLAS12 at Jefferson Lab. Physics analysis of 6 GeV Kaon data from eg2 experiment and software development projects for 12 GeV experiments will be performed at Duquesne University, while hardware and detector tests will be carried out at Jefferson Lab. The PI is leading the calibrations of a hybrid Ring Imaging CHerenkov (RICH) detector which is currently under construction. This detector will be used for hadron identification in the momentum range of 3 to 8 GeV/c. Undergraduates play an integral part in this project, which provides them with opportunities to further their training and education outside of the classroom. This will include: gaining experience in the design, assembly, and testing of modern particle Physics detectors, high tech fast electronics, and scientific data analysis.