Global QCD Analysis and Precision Electroweak Physics in High Energy Collider Phenomenology

高能对撞机现象学中的全局 QCD 分析和精密电弱物理

基本信息

批准号：
1719914
负责人：
Chien-Peng Yuan
金额：
$ 30万
依托单位：
Michigan State University
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：
2017-08-15 至 2020-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1719914&HistoricalAwards=false
关键词：
Global QCD Analysis Precision Electroweak

项目摘要

This award funds the research activities of Professor C.-P. Yuan at the Michigan State University (MSU). This project will contribute to our understanding of the fundamental nature of the physical universe --- the particles that comprise the universe and their interactions --- as revealed through sophisticated experiments in high-energy physics. Our current understanding of this physics is embodied within the so-called Standard Model (SM). Protons, neutrons, and all other strongly-interacting particles are composed of fundamental particles called partons (quarks and gluons), and interactions between these partons are described by the theory of Quantum Chromodynamics (QCD). The proposed research involves the interplay between QCD theory and experimental data from many experiments, including recent experiments at the CERN Large Hadron Collider (LHC). This global analysis of data is necessary in order to deepen our understanding of QCD, and to determine the distributions of the partons in the proton. In particular, by understanding these distributions, it is possible to start with interactions of protons with protons (which are the interactions that actually occur at the LHC) and determine the underlying quark-quark, quark-gluon and gluon-gluon interactions. This is essential for determining the underlying physics of the process --- indeed, such information was necessary for extracting the signal for the recently-discovered Higgs boson from collider data. Support for this project is therefore in the national interest because it furthers the development of fundamental science in the United States and enables the extraction of important data from collider experiments in which substantial national investments have already been made. This project is also envisioned to have significant broader impacts since it will involve the training of students and postdoctoral fellows in theoretical high-energy physics both at Michigan State University and at summer schools held by the Coordinated Theoretical and Experimental QCD (CTEQ) collaboration. More technically, this research will focus on the development of CTEQ-TEA Parton Distribution Functions, earlier versions of which have already have been essential for the interpretation of data from the world's leading high-energy collider facilities such as Fermilab (Batavia, IL), RHIC (Brookhaven, NY), DESY (Hamburg, Germany), and CERN (Geneva, Switzerland). The proposed research will also continue to refine world-leading contributions to lepton-hadron and hadron-hadron collider phenomenology. Complementary to the research on QCD, the group will also study the Electroweak (EW) sector of the Standard Model (SM), which is extremely successful in explaining and predicting experimental data spanning a range in energy from the atomic scale to the Z boson, Higgs boson and top-quark masses. Measurements of the production of W's, Z's, top-quark pairs, single top quarks and Higgs bosons at the LHC, including both inclusive rates and relevant kinematical distributions, will provide major new input into our understanding of parton distributions during the next few years. At the same time, refinements of the parton distributions are necessary for progress in the EW sector, both for testing the SM at greater precision and for probing the effects of new physics at high-energy colliders.

该奖项为C.-P.-P.教授的研究活动提供了资金。密歇根州立大学（MSU）的元。该项目将有助于我们对物理宇宙的基本性质的理解 - 构成宇宙及其相互作用的粒子 - 如高能量物理学中的复杂实验所揭示的那样。我们目前对这种物理学的理解体现在所谓的标准模型（SM）中。质子，中子和所有其他强相互作用的颗粒由称为parton的基本颗粒（Quarks和Gluons）组成，这些部分之间的相互作用由量子染色体学理论（QCD）描述。提出的研究涉及QCD理论与许多实验的实验数据之间的相互作用，包括最近在CERN大型强子撞机（LHC）的实验。为了加深我们对QCD的理解并确定质子中partons的分布，需要进行全局数据分析。特别是，通过理解这些分布，可以从质子与质子的相互作用开始（这是实际发生在LHC上的相互作用），并确定基本的夸克夸克，夸克 - 格鲁恩和gluon-gluon相互作用。这对于确定过程的基本物理学至关重要 - 实际上，从对撞机数据中提取最近发现的希格斯玻色子的信号是必需的。因此，对该项目的支持符合国家利益，因为它进一步发展了美国的基本科学，并可以从已经进行了大量国家投资的对撞机实验中提取重要数据。还设想该项目具有更广泛的影响，因为它将涉及密歇根州立大学的理论高能物理学以及由协调的理论和实验QCD（CTEQ）合作所持的暑期学校的理论高能物理学的培训。从技术上讲，这项研究将重点关注CTEQ-TEA PARTON分布功能的开发，其早期版本已经对从世界领先的高能量碰撞器设施（例如Fermilab（Batavia，IL），Rhic（Brookhaven，NY）（纽约州Brookhaven），Desy（Hamburg，desy（hamburg，dermany）和cernland（genev）（genev）（switlanda）的数据解释至关重要。拟议的研究还将继续为Lepton-Hadron和Handron-Hadron对撞机现象学提供完善世界领先的贡献。对QCD的研究互补，该组还将研究标准模型（SM）的Electroweak（EW）领域，该扇区在解释和预测从原子量表到Z Boson，Higgs Boson和Top-Quark群众的能量范围的实验数据非常成功。 LHC上W的生产，Z，Z，顶级夸克对，单个顶级夸克和希格斯玻色子的测量，包括包容率和相关的运动分布，将为我们在未来几年内对Parton分布的理解提供重大的新意见。同时，Parton分布的改进对于EW部门的进展是必要的，既可以更精确地测试SM，又要探测高能量船员的新物理学的影响。

项目成果

期刊论文数量（18）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Resummation of high order corrections in Z boson plus jet production at the LHC

DOI：
10.1103/physrevd.100.054032
发表时间：
2018-10
期刊：
Physical Review D
影响因子：
5
作者：
P. Sun;B. Yan;C. Yuan;F. Yuan
通讯作者：
P. Sun;B. Yan;C. Yuan;F. Yuan

Nonperturbative functions for SIDIS and Drell–Yan processes

DOI：
10.1142/s0217751x18410063
发表时间：
2018-04
期刊：
International Journal of Modern Physics A
影响因子：
1.6
作者：
P. Sun;J. Isaacson;C. Yuan;F. Yuan
通讯作者：
P. Sun;J. Isaacson;C. Yuan;F. Yuan

New CTEQ global analysis with high precision data from the LHC

利用 LHC 的高精度数据进行新的 CTEQ 全局分析

DOI：
10.22323/1.352.0001
发表时间：
2019
期刊：
Proceedings of science
影响因子：
0
作者：
Yuan, C. P.;Hou, Tie-Jiun;Xie, Keping;Jun, Gao;Dulat, Sayipjamal;Guzzi, Marco;Hobbs, Timothy J.;Huston, Joey Walter;Nadolsky, Pavel;Pumplin, Jon
通讯作者：
Pumplin, Jon

Updating and optimizing error parton distribution function sets in the Hessian approach. II.