CAREER: Hadron's Transverse Structure and Associated QCD Dynamics

职业：强子的横向结构和相关的 QCD 动力学

基本信息

批准号：
1945471
负责人：
Zhongbo Kang
金额：
$ 40万
依托单位：
University of California-Los Angeles
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-01 至 2025-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1945471&HistoricalAwards=false
关键词：
CAREER Hadron Transverse Structure Associated

项目摘要

Nucleons (protons and neutrons) are the building blocks of matter, and also known to be the bound states of quarks and gluons - the elementary particles that give rise to most of the mass in the visible universe. Quantum Chromodynamics (QCD) is the microscopic theory of strong interactions - one of the four fundamental forces - which describes how quarks and gluons interact with each other. The fundamental laws of QCD are elegantly concise; however, understanding the structural complexity of protons and neutrons in terms of quarks and gluons governed by those laws is one of the most important challenges facing physics today, a challenge that motivates the newest generation of experimental facilities, supercomputers, and nuclear scientists.The goal of this project is to perform new theoretical analysis and computations for important QCD scattering processes, develop phenomenological tools that can be used for reliable extraction of quark and gluon structure of the nucleon from existing and future experimental measurements, and thus address outstanding questions related to hadron structure and associated QCD dynamics. For example, the fundamental questions that the project will be able to address include: what role does the confined motion of quarks and gluons inside the nucleons play? Are there quantum correlations between the motion of quarks and gluons, their spin and the spin of the nucleon? How do quarks and gluons that come out of a high energy scattering make a transition into hadrons? What new insights can be gained from the production of collimated spray of hadrons (so-called jets)? This project will also provide much-needed guidance and predictions for the future Electron Ion Collider, the flagship nuclear experimental facility planned in the nuclear physics community.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.

核子（质子和中子）是物质的基础，也被称为夸克和胶子的结合状态，这是产生可见宇宙中大部分质量的基本粒子。量子染色体动力学（QCD）是强相互作用的微观理论 - 四个基本力之一 - 描述了夸克和胶子如何相互相互作用。 QCD的基本定律优雅地简洁。但是，从这些法律支配的夸克和脾气方面，了解质子和中子的结构复杂性是当今物理面临的最重要挑战之一，这一挑战激发了最新一代的实验设施，超级计算机和核科学家。该项目的是为重要的QCD散射过程进行新的理论分析和计算，开发现象学工具，可用于可靠地提取Quark和Gluon结构，并从现有和将来结构和相关的QCD动力学。例如，该项目将能够解决的基本问题包括：核心内部夸克和脾气的封闭运动扮演什么角色？夸克和胶子的运动，它们的自旋和核子的自旋之间是否存在量子相关性？从高能量散射中产生的夸克和脾气如何才能过渡到哈德子？从制作的Hadrons（所谓喷气式喷气式）的生产中可以获得哪些新见解？该项目还将为未来的电子离子对撞机（在核物理社区计划的旗舰核试验设施）提供急需的指导和预测。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子来评估的。和更广泛的影响审查标准。