Collaborative Research:At the Interface of LHC Theory and Experiment

合作研究:大型强子对撞机理论与实验的结合

• 批准号: 1358729
• 负责人: Matthew Strassler
• 金额: $ 20.66万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1358729&HistoricalAwards=false
• 关键词: Collaborative; Research; Interface; LHC; Theory

This award represents the transfer of a continuing grant for the research of Professor Matthew Strassler from Rutgers University to Harvard University. The LHC is the world's foremost high-energy physics experimental facility, and will probe distances shorter, and energies higher, than ever before. It will examine the weak interactions, responsible for many natural phenomena, and seek the origin of the masses of the known fundamental particles, known to arise from a Higgs mechanism whose precise nature remains unclear. The LHC might also shed light on dark matter, and might revolutionize our understanding of space-time, through discovery of extra dimensions or Supersymmetry. A full LHC research program requires experts who can work at and across the interface between theory and experiment. This project is aimed at strengthening this interface at the Institute for Advanced Study (IAS) and Rutgers University theory groups, which already work closely with the Rutgers and Princeton University experimental groups and Princeton theory group. The purpose is to augment their LHC research programs in order to close the scientific gap located at the Theory/Experiment Interface, by hiring and hosting experts who can provide tools and knowledge required by both theorists and experimentalists working on LHC physics. This will greatly expand the range of LHC research possible at these institutions, especially assisting with personnel-intensive activities including standard model background studies, development of Monte Carlo tools, and investigations of search strategies for new physics. The PIs will be involved in both developing new models to describe Beyond the Standard Model Physics, as well as creating an effective theory approach for analyzing and interpreting directly the results coming from LHC. The proposed research includes studies on background removal, using Monte Carlo tools. If a novel signal is seen at the LHC, neither a model-independent approach nor a fully model-dependent approach is appropriate. The PIs propose that once a signal is seen at LHC, they will proceed to build a "model fragment", which in many cases will take the form of an "on-shell effective theory" (OSET). Model fragments were used by the PIs in their successful analysis at the first LHC Olympics workshop, and were developed further into a Monte Carlo tool for wider use. The essential idea is to build a semi-consistent theoretical framework that makes predictions for LHC signals without requiring a fully consistent TeV-scale theory, or in the case of an OSET, possibly without even a fully consistent effective Lagrangian. The PIs will also investigate the Effects of Multiple Soft Jets on Reconstruction and Analysis. The broader impact is to create the nucleus of an LHC center on the East Coast. The IAS and Rutgers, along with Princeton, will form the nucleus of such a center, helping to anchor and enhance the diffuse but substantial research program on the East Coast, which is currently scattered around many institutions. In particular, by training new students and broadening the postdocs at the Theory/Experiment Interface, it would help, over time, to strengthen the entire US particle physics community. Also, by hosting training and research workshops, it would directly benefit other institutions, particularly in the local and regional neighborhood. Most directly, the quick-reaction workshops would foster a more rapid response from the US community to events at the LHC. The PIs also plan a series of training exercises based on the successful "LHC Olympics" model to help in the process of training young students and in retraining postdocs from more formal areas of high-energy theory.

该奖项代表了对马修·斯特拉斯勒教授的研究的持续资助从罗格斯大学转移到哈佛大学。大型强子对撞机是世界上最先进的高能物理实验设备，它将比以往任何时候都探测更短的距离和更高的能量。它将检查弱相互作用，负责许多自然现象，并寻求已知的基本粒子的质量的起源，已知来自希格斯机制，其确切性质仍不清楚。大型强子对撞机还可能揭示暗物质，并可能通过发现额外维度或超对称性来彻底改变我们对时空的理解。一个完整的LHC研究计划需要能够在理论和实验之间的界面上工作的专家。该项目旨在加强高级研究所和罗格斯大学理论小组之间的这种接口，这些小组已经与罗格斯大学和普林斯顿大学实验小组以及普林斯顿理论小组密切合作。其目的是扩大他们的LHC研究计划，以缩小位于理论/实验接口的科学差距，通过聘请和接待专家谁可以提供所需的工具和知识，理论家和实验学家在LHC物理工作。这将极大地扩展这些机构可能进行的LHC研究的范围，特别是协助人员密集型活动，包括标准模型背景研究，蒙特卡罗工具的开发以及新物理学搜索策略的调查。 PI将参与开发新的模型来描述超越标准模型物理，以及创建一个有效的理论方法来分析和直接解释来自LHC的结果。拟议的研究包括背景去除的研究，使用蒙特卡罗工具。如果在大型强子对撞机上看到一个新的信号，那么模型独立的方法和完全依赖模型的方法都是不合适的。PI提出，一旦在LHC中看到信号，他们将继续建立一个“模型片段”，在许多情况下将采取“壳层有效理论”（OSET）的形式。模型碎片被PI在第一次LHC奥林匹克研讨会上成功分析中使用，并被进一步开发成蒙特卡洛工具以供更广泛使用。其基本思想是建立一个半一致的理论框架，使预测LHC信号，而不需要一个完全一致的TeV尺度理论，或在一个OSET的情况下，甚至可能没有一个完全一致的有效拉格朗日。PI还将研究多个软射流对重建和分析的影响。更广泛的影响是在东海岸建立LHC中心的核心。IAS和罗格斯大学，沿着普林斯顿大学，将成为这样一个中心的核心，帮助锚和加强东海岸分散但实质性的研究计划，目前分散在许多机构。特别是，通过培训新学生和扩大理论/实验接口的博士后，随着时间的推移，它将有助于加强整个美国粒子物理学界。此外，通过主办培训和研究讲习班，它将直接使其他机构受益，特别是在地方和区域邻近地区。最直接的是，快速反应研讨会将促进美国社区对LHC事件做出更迅速的反应。PI还计划在成功的“LHC奥运会”模式的基础上进行一系列培训活动，以帮助培训年轻学生和重新培训高能理论更正式领域的博士后。