Investigations in High Energy Physics

高能物理研究

• 批准号: 1519175
• 负责人: Adam Leibovich
• 金额: $ 42万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1519175&HistoricalAwards=false
• 关键词: Investigations; Energy; Physics

This award funds the research activities of Professors Ayres Freitas and Adam Leibovich at the University of Pittsburgh.This purpose of this project is to develop improved theoretical tools and calculational methods for the robust, model-independent interpretation of results from current and future particle-physics experiments, both at the highest-energy colliders, such as the Large Hadron Collider, and for lower-energy precision measurements. The identification of a potentially small signal of new physics requires an excellent understanding of known particles and interactions. Furthermore, we will investigate techniques for model-independent descriptions of the effects of new physics, using a framework called "effective field theories". 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 laws. In conjunction with this effort, the PI's will also teach a special-topics course on effective field theories and precision physics. Both are topics that are often neglected in typical particle-physics textbooks. More technically, the research program can be divided into three main parts: (1) The development of calculational techniques for three-loop corrections to electroweak precision observables, and the integration of existing and new theoretical results for these observables into a flexible, object-oriented computer program; (2) The application of effective field theories, in particular Soft-Collinear Effective Theory, to unresolved questions at hadron colliders, such as processes involving jets, quarkonium production, and low-x physics; and (3) A comprehensive study of the use of effective field theories for new physics in Higgs, electroweak and flavor physics, with a focus on investigating correlations between operators, the role of different mass scales in the new-physics sector, and complications that arise in models of dark matter. This research plan is guided by ongoing and planned experimental high-energy physics efforts, and results will be made available to the experimental community in a suitable form.

该奖项资助匹兹堡大学的Ayres Freitas和Adam Leibovich教授的研究活动。该项目的目的是开发改进的理论工具和计算方法，用于对当前和未来粒子物理实验结果进行稳健的、独立于模型的解释，无论是在最高能量的对撞机上，如大型强子对撞机，还是在较低能量的精确测量中。 识别新物理学的潜在小信号需要对已知粒子和相互作用有很好的理解。 此外，我们将研究新物理效应的模型独立描述技术，使用称为“有效场论”的框架。 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。 与此同时，PI还将教授有效场论和精密物理学的专题课程。 这两个主题在典型的粒子物理学教科书中经常被忽视。 从技术上讲，研究计划可以分为三个主要部分： (1)发展了电弱精密观测量的三回路修正计算技术，并将这些观测量的现有和新的理论结果整合到一个灵活的、面向对象的计算机程序中;（2）有效场论，特别是软共线有效场论，应用于强子对撞机中尚未解决的问题，如涉及喷流、夸克偶素产生和低x射线的过程 物理学;（3）全面研究有效场论在希格斯、电弱和味物理学中的新物理学应用，重点研究算子之间的相关性、不同质量尺度在新物理学领域的作用以及暗物质模型中出现的复杂性。 这项研究计划由正在进行和计划进行的实验高能物理工作指导，结果将以适当的形式提供给实验界。