Research in Elementary Particle Theory and Physics Theorynet Program

基本粒子理论与物理理论网研究项目

• 批准号: 0757959
• 负责人: Pran Nath
• 金额: $ 115万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0757959&HistoricalAwards=false
• 关键词: Research; Elementary; Particle; Theory; Physics

In the near future the Large Hadron Collider (LHC) will come on line providing an unprecedented opportunity for particle theorists to probe the nature of fundamental interactions in the Tera-electronvolt region. The PIs present a detailed program for the analysis of event signatures at the LHC that would provide the key to the discovery of new physics. Analysis of such new physics in the framework of grand unified theories (GUTS), string theories, and theories based on D branes are proposed, including issues related to quark-charged lepton- neutrino textures and proton stability. Updated signatures for detection of possible TeV-scale black holes will be explored. The effects of possible TeV-scale string excitations in multi-gluon scattering amplitudes underlying multi-jet production processes will be investigated. It is also proposed to test models of CP violation in sparticle (Supersymmetric partners of Standard model particles) production and decays (in the CMS and the ATLAS detectors) at the LHC and from the data on B decays from LHCb. Additionally, physics of extra U(1)'s which may be the remnants of GUTs and strings below the symmetry breaking scale will be investigated. In the field of particle astrophysics, a major neutrino telescope (IceCube) will be operating at full acceptance in several years, and a number of high energy gamma ray facilities are online now or will be so in the very near future.The research proposed will show how measurements at these installations, as well as at the Pierre Auger Laboratory ground array, can permit simultaneous advances in astrophysics and particle physics, probing TeV scale black holes, quantum decoherence, non-seesaw origin of light neutrino masses and neutrino stability. The proposed research projects of this proposal will contribute in an important way to the discovery of new physics beyond the Standard Model. Such a discovery will have important implications for the development of high energy theory, string theory and particle-astrophysics in the coming decades. One of the PIs, Tomasz Taylor,is the coordinator of the Boston Theorynet outreach program. This program aims at explaining to general audiences what theoretical physicists do to students in high school classrooms and to teachers in individual meetings with theorists. Its main component is the direct interaction between physicists, high school students and teachers, through question and answer sessions and presentations during regular class hour visits and after class.

在不久的将来，大型强子对撞机（LHC）将上线，为粒子理论家提供一个前所未有的机会，以探索在太电子伏区域的基本相互作用的性质。PI提出了一个详细的程序，用于分析LHC的事件签名，这将为发现新物理学提供关键。在大统一理论（GUTS），弦理论和基于D膜的理论的框架下，提出了对这种新物理学的分析，包括与夸克带电轻子-中微子纹理和质子稳定性有关的问题。将探索用于检测可能的TeV级黑洞的更新签名。可能的TeV尺度的弦激发的多胶子散射振幅的多喷流生产过程的影响将进行调查。还建议在LHC和LHCb的B衰变数据中测试sparticle（标准模型粒子的超对称伙伴）产生和衰变（在CMS和ATLAS探测器中）的CP破坏模型。此外，额外的U（1）的物理，这可能是大统一理论和弦的对称性破缺标度以下的残余将被调查。在粒子天体物理学领域，一个主要的中微子望远镜（IceCube）将在几年内全面投入使用，一些高能伽马射线设施现在或在不久的将来也将投入使用。拟议的研究将表明，在这些设施以及在皮埃尔俄歇实验室地面阵列上进行的测量如何能够使天体物理学和粒子物理学同时取得进展，探索TeV尺度黑洞、量子退相干、轻中微子质量的非跷跷板起源和中微子稳定性。该提案的研究项目将为发现标准模型之外的新物理学做出重要贡献。这一发现将对未来几十年高能理论、弦理论和粒子天体物理学的发展产生重要影响。其中一位PI，Tomasz Taylor，是波士顿理论网络推广计划的协调员。 该计划旨在向普通观众解释理论物理学家在高中课堂上对学生做了什么，以及在与理论家的个人会议中对教师做了什么。它的主要组成部分是物理学家，高中学生和教师之间的直接互动，通过问答环节和定期上课时间访问和课后演示。