Study of the 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研究

• 批准号: 1913138
• 负责人: Jiangyong Jia
• 金额: $ 13.7万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1913138&HistoricalAwards=false
• 关键词: Study; Dynamics; Properties; Hot; Dense

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 QGP 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 (BNL) using the STAR detector, with an emphasis on the Beam Energy Scan at BNL. Both the ATLAS and STAR experiments provide excellent training opportunities for graduate 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 efforts to map out the QCD phase diagram and search for the possible QCD critical point, by utilizing the higher-order cumulants of multiplicity and conserved charges in the STAR beam energy scan phase II program. The proposed efforts are built upon the group's established expertise in various correlation measurements.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

众所周知，质子和中子是由更小的夸克和胶子组成的。在使用两束重核的碰撞中，由这些成分形成了一种新的物质状态，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，如QGP的时空动力学及其输运性质。该项目将通过研究波动的集体流动和粒子与QGP的相互作用来进行。高能量密度物质的研究可以对我们理解量子色动力学（QCD）理论产生深远的影响，该理论控制着原子核的行为和早期宇宙的演化，超新星爆炸和中子星的性质。这项研究将在欧洲的大型强子对撞机上使用ATLAS探测器进行，并在布鲁克海文国家实验室的相对论重离子对撞机上使用星星探测器进行，重点是布鲁克海文国家实验室的束流能量扫描。ATLAS和星星实验都为研究生提供了极好的培训机会。建议的措施包括：1。对横向和纵向的粒子相关性进行全面的模型研究，并与测量结果进行比较，以限制A+A碰撞中物质的动力学和性质。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的较低碰撞能量下进行类似的分析。2.利用星星束流能量扫描第二阶段计划中的多重数和守恒电荷的高阶累积量绘制QCD相图和寻找可能的QCD临界点。 该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Flow and centrality fluctuations from ATLAS

来自 ATLAS 的流量和中心性波动

• DOI: 10.1016/j.nuclphysa.2020.121761
• 发表时间: 2021
• 期刊: Nuclear Physics A
• 影响因子: 1.4
• 作者: Jia, Jiangyong

Disentangling contributions to small-system collectivity via scans of light nucleus-nucleus collisions

• DOI: 10.1103/physrevc.101.021901
• 发表时间: 2019-04
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: S. Huang;Zhenyu Chen;Wei Li-;J. Jia

Longitudinal eccentricity decorrelations in heavy-ion collisions

• DOI: 10.1103/physrevresearch.2.023362
• 发表时间: 2020-03
• 期刊: Physical Review Research
• 影响因子: 4.2
• 作者: A. Behera;M. Nie;J. Jia

Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems

• DOI: 10.1103/physrevc.100.064905
• 发表时间: 2019-06
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: M. Nie;L. Yi;Xiaofeng Luo;G. Ma;J. Jia

Centrality fluctuations and decorrelations in heavy-ion collisions in a Glauber model

• DOI: 10.1103/physrevresearch.2.023319
• 发表时间: 2020-01
• 期刊: Physical Review Research
• 影响因子: 4.2
• 作者: J. Jia;Chunjian Zhang;Jun Xu