Research and Education with GlueX

核子、质子和中子都是由更基本的夸克组成的，这一点现在已是公认的事实。该奖项支持的主要物理学计划是测量称为介子的轻粒子的夸克结构。 拟议的研究将通过调试新设备来支持研究基础设施，以从托马斯杰斐逊国家加速器设施（杰斐逊实验室）的加速器产生的散射电子中线性产生高能光子束。 这项研究还将包括杰斐逊实验室D厅粒子探测器的计算机模拟。 学生参与研究工作是该计划的核心组成部分。这里提出的实验计划体现了杰斐逊实验室的优先事项之一：阐明质子，中子和介子的基本结构。这里感兴趣的粒子被称为混合介子，由于胶子提供了额外的自由度，它们被认为具有组分夸克模型中不允许的量子数，胶子是强力的力载体。 杂化介子的发现将是基于量子色动力学（QCD）理论的现代理论模型的胜利。该奖项还将为人员提供支持，以委托线性偏振光子束和电子标记器作为杰斐逊实验室D厅GSTX实验的一部分。

It is now a well-established fact that nucleons, protons and neutrons, are made up of more elementary particles called quarks. The main physics program supported by this award is to measure the quark structure of light particles called mesons. The proposed research will support the research infrastructure by commissioning new equipment to produce linearly a beam of high-energy photons from scattered electrons produced by the accelerator at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). The research will also include computer simulations of the particle detector in Hall D at Jefferson Lab. Participation of students in the research effort is a central component of this program.The experimental program proposed here embodies one of Jefferson Lab's priorities: to elucidate the underlying structure of protons, neutrons, and mesons. The particles of interest here are called hybrid mesons, which are identified as having quantum numbers not allowed in the constituent quark model, due to extra degrees of freedom provided by gluons, which are the force-carriers of the strong force. The discovery of hybrid mesons would be a triumph of modern theoretical models based on the theory of quantum chromodynamics (QCD). This award will also provide support for personnel to commission the linearly polarized photon beam and the electron tagger as part of the GlueX experiment In Hall D of Jefferson Lab.