Dynamics and Properties of Hot and Dense Quark and Gluon Matter

热密夸克和胶子物质的动力学和性质

• 批准号: 1613294
• 负责人: Jiangyong Jia
• 金额: $ 52.5万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2020-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1613294&HistoricalAwards=false
• 关键词: Dynamics; Properties; Hot; Dense; Quark

It is a well-established fact that protons and neutrons are made up of smaller constituents called quarks and gluons. In collisions using two beams of heavy nuclei, a new state of matter is formed from these constituents, called the quark-gluon plasma (QGP). This project will answer fundamental questions about the QGP, such as the space-time dynamics of the matter and its transport properties. The project will be carried out by studying the collective flow of fluctuations and particle interactions with the QGP. Studies of high energy density matter can have a profound impact on our understanding of the theory of Quantum Chromodynamics (QCD), which governs the behavior of nuclei and the evolution of the early universe, supernova explosions and the properties of neutron stars. The research will be carried out at the Large Hadron Collider in Europe, using the ATLAS detector, and at the Relativistic Heavy Ion Collider of Brookhaven National Laboratory, using the STAR detector. Both the ATLAS and STAR experiments provide excellent training opportunities for graduate, undergraduate and high school students.The proposed measurements include: 1. Comprehensive model studies of particle correlations in transverse and longitudinal directions as compared with measurements to constrain the dynamics and properties of the matter in A+A collisions. This effort requires inventing new analysis methods, developing event-shape triggers to take advantage of the upcoming high-luminosity Pb+Pb run, as well as carrying out similar analyses at lower collision energy at RHIC. 2. Detailed investigations of long-range ridge correlations in small systems such as pp and p+Pb collisions, which require development of high-multiplicity triggers, improving the multi-particle correlation method, as well as studying the particle mass dependence of the ridge correlation. 3. Future efforts to understand the jet-quenching response to the initial density fluctuations and to search for medium response to quenched jets. The proposed efforts are built upon the group's established expertise in various correlation measurements.

众所周知的事实是，质子和中子是由称为夸克和胶子的较小成分组成的。 在使用两束重核的碰撞中，这些成分形成了一种新的物质态，称为夸克-胶子等离子体（QGP）。 该项目将回答有关 QGP 的基本问题，例如物质的时空动力学及其输运特性。 该项目将通过研究 QGP 的集体波动流和粒子相互作用来进行。高能量密度物质的研究可以对我们对量子色动力学（QCD）理论的理解产生深远的影响，该理论控制着原子核的行为以及早期宇宙的演化、超新星爆炸和中子星的特性。该研究将在欧洲的大型强子对撞机（使用 ATLAS 探测器）和布鲁克海文国家实验室的相对论重离子对撞机（使用 STAR 探测器）进行。 ATLAS 和 STAR 实验都为研究生、本科生和高中生提供了极好的培训机会。提出的测量包括： 1. 横向和纵​​向粒子相关性的综合模型研究，与约束物质动力学和性质的测量进行比较在A+A碰撞中。这项工作需要发明新的分析方法，开发事件形状触发器以利用即将到来的高光度 Pb+Pb 运行，以及在 RHIC 上以较低碰撞能量进行类似的分析。 2. 详细研究p​​p和p+Pb碰撞等小系统中的长程脊相关性，这需要开发高多重性触发器，改进多粒子相关方法，以及研究脊的粒子质量依赖性相关性。 3. 未来努力了解射流淬火对初始密度波动的响应并寻找对淬火射流的介质响应。 拟议的工作是建立在该小组在各种相关性测量方面已建立的专业知识的基础上的。