Theoretical Studies in Elementary Particle Physics

基本粒子物理理论研究

• 批准号: 8807786
• 负责人: Wu-ki Tung
• 金额: $ 2万
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8807786&HistoricalAwards=false
• 关键词: Theoretical; Studies; Elementary; Particle; Physics

This project emphasizes development of methods to test theoretical ideas in current and future accelerator experiments. The first part of the project deals with current problems concerning the very successful and indispensable "QCD- based parton model" - the "small-x" behavior of the parton distribution functions which governs the rates of events expected at all future accelerators, including the Superconducting Super Collider (SSC); and methods of calculating the production of new particles initiated by heavy quark-partons. The production of the Higgs particle which is responsible for the spontaneous breaking of gauge symmetries will be studied in detail. The second part of the project concerns the physics of the W and Z vector bosons which mediate the unified electro-weak interactions. Experimental consequences of the hitherto unverified tri-boson coupling of these gauge bosons will be explored in depth with an eye for incisive tests at the high-energy electron-positron colliders SLC and LEP. Effects due to virtual W's and Z's, especially the "effective vector boson" approximation to high energy processes, will be studied. The results of this work should help specifically to ensure maximum effectiveness of the proposed superconducting supercollider accelerator, in addition to increasing our general knowledge of the full implications of the Standard (Salaam-Weinberg) Model of electroweak processes.

该项目强调在当前和未来的加速器实验中开发测试理论思想的方法。该项目的第一部分处理当前有关非常成功和必不可少的“基于QCD的部分模型”的问题-部分分布函数的“小x”行为，该函数控制所有未来加速器（包括超导超级对撞机（SSC））预期事件的速率；以及计算由重夸克-部分引发的新粒子产生的方法。将详细研究导致规范对称自发破断的希格斯粒子的产生。该项目的第二部分涉及W和Z矢量玻色子的物理，它们介导统一的电弱相互作用。这些规范玻色子的三玻色子耦合迄今尚未得到证实，其实验结果将在高能正电子对撞机SLC和LEP上进行深入的测试。将研究虚W′s和虚Z′s的效应，特别是高能过程的“有效矢量玻色子”近似。这项工作的结果应该特别有助于确保超导超级对撞机加速器的最大有效性，除了增加我们对电弱过程的标准（萨拉姆-温伯格）模型的全部含义的一般知识。