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Perturbative QCD Study for Jet and Heavy Flavor Production

喷射和浓香精生产的微扰 QCD 研究

基本信息

批准号：
1720486
负责人：
Zhongbo Kang
金额：
$ 18万
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：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2020-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1720486&HistoricalAwards=false
关键词：
Perturbative QCD Study Jet Heavy

项目摘要

This award funds the research activities of Professor Zhongbo Kang at the University of California, Los Angeles.After nearly twenty years of planning and construction, the Large Hadron Collider (LHC) is now the highest-energy particle collider in the world. By colliding elementary particles against each other at high energies, physicists expect to learn about the fundamental building blocks of matter and their interactions at higher energies and smaller distances than have ever been previously explored. Collimated jets of hadrons are a dominant feature of high-energy particle interactions, and are copiously produced at the LHC. The research of Professor Kang is focused on understanding the production of these strongly interacting particles, from which important information can be extracted. Jets constitute unique opportunities to explore the dynamics of the strong interaction and to study the fundamental properties of the underlying theory, Quantum Chromodynamics (QCD). As a result, research in this area advances the national interest by promoting the progress of science in one of its most fundamental directions: the discovery and understanding of new physical law. This project is also envisioned to have significant broader impacts. Professor Kang will involve graduate students in his research, and thereby provide critical training for junior physicists beginning research in this field. He also intends to give public lectures on his research results, and develop new course curricula based on results from the LHC.More technically, Professor Kang will develop theoretical tools to perform accurate QCD phenomenology at the LHC, especially for inclusive and heavy flavor tagged jets and their substructure. He will also perform studies for heavy quarkonium production by making use of a novel fragmentation function approach within QCD factorization. In addition, he will combine the frameworks of heavy quarkonium physics and jet substructure in order to achieve a better understanding of the production and polarization of heavy quarkonium at the LHC, which is currently one of the most intriguing puzzles in the field.

该奖项资助了加州大学洛杉矶分校康忠博教授的研究活动。经过近二十年的规划和建设，大型强子对撞机（LHC）现在是世界上能量最高的粒子对撞机。通过使基本粒子在高能量下相互碰撞，物理学家希望了解物质的基本组成部分及其在更高能量和更小距离下的相互作用，而不是以前探索过的。强子的准直喷流是高能粒子相互作用的主要特征，并且在LHC中大量产生。康教授的研究重点是了解这些强相互作用粒子的产生，从中可以提取重要信息。喷流为探索强相互作用的动力学和研究基础理论量子色动力学（QCD）的基本性质提供了独特的机会。因此，这一领域的研究通过促进科学在其最基本的方向之一的进步来促进国家利益：发现和理解新的物理定律。预计该项目还将产生更广泛的重大影响。康教授将让研究生参与他的研究，从而为开始这一领域研究的初级物理学家提供关键的培训。此外，他还将在LHC上进行公开讲座，并根据LHC的研究成果开发新的课程。从技术上讲，康教授将开发理论工具，以在LHC上进行精确的QCD唯象学，特别是对包容性和重味标记的喷流及其子结构。他还将利用QCD因子分解中的一种新的碎裂函数方法来研究重夸克偶素的产生。此外，他将联合收割机的框架，重夸克偶素物理和喷流子结构，以实现更好地了解生产和极化的重夸克偶素在大型强子对撞机，这是目前在该领域最有趣的难题之一。