Elementary Particle Theory

基本粒子论

• 批准号: 1316222
• 负责人: Csaba Csaki
• 金额: $ 194万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-01-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1316222&HistoricalAwards=false
• 关键词: Elementary; Particle; Theory

This award funds the research activities of Profs. Csaba Csaki, Yuval Grossman, Toichiro Kinoshita, Peter Lepage, Liam McAllister and Maxim Perelstein at Cornell University. The investigators propose to study some of the most important and exciting topics in a variety of fields within high-energy theory, including particle physics in and beyond the Standard Model, collider physics, string theory, and cosmology. Research on the Standard Model (SM) consists of investigations of flavor and neutrino physics, lattice quantum chromodynamics (QCD), and precision quantum electrodynamics (QED). Beyond the Standard Model, explorations of diverse models of the TeV scale are proposed, together with studies of the new collider physics techniques necessary for testing them. Investigations of aspects of dark matter physics are also proposed. Within string theory the primary focus is on understanding the effective theories arising in string compactifications, and exploring the implications of string theory for cosmology. Intellectual merit: The Cornell particle theory group carries out state-of-the-art research in nearly every major area of modern particle theory. The unifying theme of the group's research program is a distinctive focus on theoretical problems that are relevant for present and future experiments, including the Large Hadron Collider (LHC), the intensity frontier program, dark matter searches, and cosmic microwave background experiments. The proposed research is directed at maximizing the scientific impact of these experiments. The most important recent development in particle physics is the historic discovery of the Higgs(-like) boson, as part of the wealth of data produced by the 2010-2012 runs of the LHC. Professors Csaki, Grossman and Perelstein will focus their attention over the next five years on physics related to current and future colliders. Csaki will explore unconventional supersymmetric models that are still viable in light of the LHC data; alternative Higgs models, including a Higgslike dilaton and the composite Higgs; and other TeV-scale models consistent with LHC results. Grossman will explore the physics that is relevant to the intensity frontier program in the near and more distant future. This includes charm and beauty physics, charge-parity (CP) violation, and the study of neutrino physics. Perelstein's research plans include using the new window on TeV-scale physics provided by the 125 GeV boson to glean new information about possible physics beyond the Standard Model; understanding the implications of the direct LHC searches for new physics, focusing in particular on naturalness issues; and proposing new LHC searches motivated by both theoretical and experimental developments. In parallel, Perelstein proposes to continue to contribute to theoretical interpretations of dark matter searches, where several interesting hints of detection have already been reported, and much more data will soon become available. Professor Lepage, as a leading member of the "High Precision QCD" (HPQCD) lattice gauge theory collaboration, will continue the pursuit of high-precision results for heavy quark physics from lattice gauge theory, obtaining semileptonic D-meson form factors for charm physics; extending b-quark results to the same precision (of order 1%) as the charm observables; and determining the quark masses and the strong coupling constant to high precision. Professor Kinoshita has devoted the past decade to a systematic evaluation of the five-loop QED contribution to the anomalous magnetic moment (g-2) of the electron. In the next few years, he proposes to improve the numerical evaluation of his group's analytic results. Professor McAllister plans to investigate the physics of the very early universe, using cosmological observations of ultraviolet-sensitive quantities to shed light on theories of quantum gravity. McAllister's primary focus will be understanding inflationary dynamics in compactifications of string theory, but he also proposes to study the vacuum structure of non-supersymmetric string compactifications. Broader impact: The Cornell particle theory group puts a high priority on the training of graduate students and postdocs, as well as on the wide dissemination of recent research results to the general public. Over the past three years, the group graduated twelve students, a majority of whom are now postdocs, while eight of our former students who graduated over the past decade now have faculty positions in the U.S. or abroad. Every member of the group is vigorously pursuing all possibilities for outreach to the general public. Numerous public talks, articles, colloquia, high school lectures and teacher conferences have been produced in the past, and will continue to be organized in the future by the group members.

该奖项资助教授的研究活动。康奈尔大学的Csaba Csaki，Yuval Grossman，Toichiro Kinoshita，Peter Lepage，Liam麦卡利斯特和Maxim Perelstein。研究人员建议在高能理论的各个领域研究一些最重要和最令人兴奋的主题，包括标准模型中的粒子物理学，对撞机物理学，弦理论和宇宙学。标准模型（SM）的研究包括味和中微子物理学，晶格量子色动力学（QCD）和精密量子电动力学（QED）的研究。除了标准模型之外，还提出了对TeV尺度的各种模型的探索，以及对测试它们所需的新对撞机物理技术的研究。暗物质物理学方面的调查也提出了建议。在弦理论中，主要的焦点是理解弦紧化中产生的有效理论，并探索弦理论对宇宙学的影响。康奈尔粒子理论小组在现代粒子理论的几乎每一个主要领域进行最先进的研究。该小组的研究计划的统一主题是一个独特的重点理论问题，是相关的现在和未来的实验，包括大型强子对撞机（LHC），强度前沿计划，暗物质搜索和宇宙微波背景实验。拟议的研究旨在最大限度地发挥这些实验的科学影响。粒子物理学最近最重要的发展是历史性地发现了希格斯玻色子，这是2010-2012年LHC运行产生的丰富数据的一部分。Csaki，Grossman和Perelstein教授将在未来五年内专注于与当前和未来对撞机相关的物理学。Csaki将探索根据LHC数据仍然可行的非常规超对称模型;替代希格斯模型，包括Higgslike介子和复合希格斯粒子;以及与LHC结果一致的其他TeV尺度模型。格罗斯曼将在不久的将来和更遥远的将来探索与强度前沿计划相关的物理学。这包括魅力和美丽的物理学，电荷宇称（CP）违反，以及中微子物理学的研究。佩雷尔斯坦的研究计划包括利用125 GeV玻色子提供的TeV尺度物理学的新窗口来收集标准模型之外可能的物理学的新信息;理解直接LHC搜索新物理学的意义，特别是关注自然性问题;并提出新的LHC搜索理论和实验发展。与此同时，Perelstein建议继续为暗物质搜索的理论解释做出贡献，其中已经报道了几个有趣的探测线索，并且很快就会有更多的数据可用。Lepage教授作为“高精度QCD”（HPQCD）格点规范理论合作的领导成员，将继续从格点规范理论中寻求重夸克物理的高精度结果，获得粲物理的半轻子D介子形状因子;将b夸克结果扩展到相同的精度。（1%量级）作为粲观测量;并高精度地确定夸克质量和强耦合常数。木下教授在过去的10年里一直致力于系统地评估五圈QED对电子反常磁矩（g-2）的贡献。在接下来的几年里，他建议改进其小组分析结果的数值评估。麦卡利斯特教授计划研究非常早期宇宙的物理学，利用紫外线敏感量的宇宙学观测来阐明量子引力理论。麦卡利斯特的主要重点将是理解弦理论紧化中的暴胀动力学，但他也建议研究非超对称弦紧化的真空结构。更广泛的影响：康奈尔大学粒子理论小组高度重视研究生和博士后的培训，以及向公众广泛传播最新研究成果。在过去的三年里，该集团毕业的12名学生，其中大多数现在是博士后，而我们的前学生谁在过去十年毕业的八个现在有教师职位在美国或国外。该小组的每一位成员都在积极寻求与公众联系的一切可能性。小组成员过去曾举办许多公开讲座、文章、座谈会、高中讲座和教师会议，今后将继续举办这些活动。