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

高能科利尔现象学中的全局QCD分析和精密电弱物理

• 批准号: 2310291
• 负责人: Chien-Peng Yuan
• 金额: $ 31.5万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-01 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2310291&HistoricalAwards=false
• 关键词: Global; QCD; Analysis; Precision; Electroweak

This award funds the research activities of Professor C.-P. Yuan at Michigan State University. Elementary particle physics addresses the question "What is matter made of?" on the most fundamental level --– which is to say, on the smallest length scales. Our current understanding is that protons and neutrons, and all other strongly interacting particles, are composed of fundamental particles called partons (quarks and gluons). The strong interactions between the partons are described by the theory of Quantum Chromodynamics (QCD). As part of this research project, Professor Yuan aims to develop theoretical methods to extract information from the QCD theory which are critical for interpreting experimental data around the world, including recent experiments at the CERN Large Hadron Collider (LHC). 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 Yuan will involve postdocs in his research, and thereby provide critical training for junior physicists beginning research in this field. He also intends to give public lectures on their research results and develop new course curricula based on the results of their research.More technically, Professor Yuan will extract the most updated CTEQ-TEA Parton Distribution Functions (PDFs) from a global analysis of the experimental data. (CTEQ is an acronym for "Coordinated Theoretical Experimental Project of QCD", and TEA for "Tung et al".) He will expand the theoretical capabilities of the analysis to include corrections from higher-order QCD interactions, heavy quark mass effects, next-to-leading order quantum electrodynamics (QED) interactions, and transverse momentum resummation. He will also refine the techniques for analyzing the PDF uncertainties and the correlations among the predictions of various physical observables, and investigate the implications of PDFs and their associated uncertainties on the most important physical processes at colliders, particularly at the LHC. Measurements of W, Z, top quark pair, single top quark and Higgs boson productions at the LHC, including both inclusive rates and various kinematical distributions, will provide major new input to the determination of PDFs during the next few years. At the same time, refinements of the PDFs are crucial both for testing the Standard Model at greater precision and for probing New Physics effects at high energy colliders.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.

该奖项为C.-P.-P.教授的研究活动提供了资金。密歇根州立大学的元。基本粒子物理学解决了“什么是由什么问题？”的问题。在最基本的层面上 - 也就是说，在最小的长度尺度上。我们目前的理解是，质子和中子以及所有其他强烈相互作用的颗粒都是由称为零件（夸克和麸质）的基本颗粒组成的。各部分之间的强相互作用由量子染色体学理论（QCD）描述。作为该研究项目的一部分，Yuan教授旨在开发理论方法来从QCD理论中提取信息，这对于解释世界各地的实验数据至关重要，包括最近在CERN大型强子撞机（LHC）的实验。结果，该领域的研究通过以最基本的方向之一来促进科学的进步来提高国家利益：对新物理法的发现和理解。还设想该项目具有更广泛的影响。 Yuan教授将涉及博士后研究，从而为初级物理学家提供重要的培训。他还打算根据他们的研究结果进行公开讲座，并根据他们的研究结果开发新课程。从技术上讲，Yuan教授将从对实验数据的全球分析中提取最新更新的CTEQ-TEA PARTON分布功能（PDFS）。 （CTEQ是“ QCD协调的理论实验项目”和“ Tung等人”的TEA的首字母缩写。）他将扩展分析的理论能力，包括包括从高阶QCD相互作用，重QUARK质量效应，近代QUARK质量效应的校正，近代领先的量子量子动力学（QED）相互作用和横向动量结果。他还将完善分析PDF不确定性的技术以及各种物理观察到的预测之间的相关性，并研究PDF及其相关的不确定性对围墙最重要的物理过程的含义，尤其是在LHC上。 W，Z，顶级夸克对，单顶夸克和Higgs Boson Productions的测量，包括包含率和各种运动学分布，将为未来几年确定PDF的重大新投入。同时，PDF的改进对于更精确地测试标准模型至关重要，并且对于在高能量colliders上进行新的物理效果探讨了新的物理效应。该奖项反映了NSF的法定任务，并通过使用基金会的智力优点和更广泛的影响来评估NSF的法定任务。