CAREER: Studies in Frontier Particle Physics

职业：前沿粒子物理学研究

• 批准号: 0644849
• 负责人: Andrei Gritsan
• 金额: $ 55万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-15 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0644849&HistoricalAwards=false
• 关键词: CAREER; Studies; Frontier; Particle; Physics

Project Description:This proposal supports research at the frontiers of experimental particle physics. The goals of the program are to lead discoveries on the CMS experiment at the Large Hadron Collider (LHC) at CERN and to promote teaching, learning, and sharing the excitement of the research with the broader community.Intellectual Merit: The scientific goal of the program is to discover new particles that explain unification of the fundamental forces and particles, the mystery of dark matter and energy, and the lack of antimatter in our universe. The research being proposed will maximize the scientific value of the CMS experiment at the LHC. In the first two years of the program novel techniques developed by the PI will be used to optimize the detector for the discoveries through careful alignment analysis of its components. In the subsequent years, the optimized detector will be used as a tool to discover new mysterious particles. The unprecedented level of the energy scale of the new collider facility will open an extensive range of physics topics. A new mysterious Higgs particle is expected to be responsible for the property of mass of all particles. The angular analysis of its decay will be a way to understand its origin. The PI has already tools to disentangle complicated angular structures through his discoveries in the area of quark flavor physics. The Higgs may not be alone, and a more general symmetry may be necessary to explain the fundamental laws of physics. A popular symmetry predicts heavy supersymmetric particles. The research direction during the subsequent years of the program will be guided by the first data. Discovery of new particles at the energy frontier will depend on the ability to distinguish them from an enormous background of random particles produced in the high-energy collisions. Understanding the alignment of thousands of silicon sensors which track the particle paths is necessary to achieve micron precision and becomes the decisive factor in success of the program. The PI plans new procedures for alignment analysis of the CMS silicon tracking system using combination of the optical survey measurements and information from tracks. The PI brings this advanced technique from his pioneering studies in the quark flavor experiment and builds on expertise of the Johns Hopkins group in the CMS silicon detectors.Broader Impact: The proposed research has a strong educational component. It will provide training for graduate students and allow undergraduate students to participate in research. The PI plans to develop hands-on demonstrations of elementary particles and other outreach activities through the QuarkNet program, annual Johns Hopkins Physics Fair, and collaboration with the Maryland Science Center. Collaboration with the Science Center has been funded by NSF from the EPSI grant. The PI will engage graduate students in collaboration with experts from the Science Center to create new exhibits which will communicate LHC research results to the public. This will strengthen the student's skills for public outreach, fulfill the Center's mission to further the public understanding of research, and serve as a guide for other universities and centers.

项目描述：该提案支持实验粒子物理学前沿的研究。该计划的目标是在欧洲核子研究中心的大型强子对撞机（LHC）上领导CMS实验的发现，并促进教学，学习，并与更广泛的社区分享研究的兴奋。该计划的科学目标是发现新的粒子，解释基本力和粒子的统一，暗物质和能量的奥秘，以及宇宙中反物质的缺乏。正在进行的研究将最大限度地提高LHC CMS实验的科学价值。在该计划的前两年，PI开发的新技术将用于通过对其组件进行仔细的对齐分析来优化探测器。在随后的几年里，优化后的探测器将被用作发现新的神秘粒子的工具。新的对撞机设施的能量规模达到了前所未有的水平，这将开启一个广泛的物理学课题。一种新的神秘的希格斯粒子有望对所有粒子的质量属性负责。对它衰变的角度分析将是了解它起源的一种方法。PI已经通过他在夸克味物理学领域的发现来解开复杂的角结构。希格斯玻色子可能并不孤单，更普遍的对称性可能是解释物理学基本定律所必需的。一种流行的对称性预言了重超对称粒子。该计划随后几年的研究方向将由第一批数据指导。在能量前沿发现新粒子将取决于将它们与高能碰撞中产生的大量随机粒子区分开来的能力。了解跟踪颗粒路径的数千个硅传感器的对准对于实现微米精度是必要的，并且成为该计划成功的决定性因素。PI计划使用光学测量和轨道信息相结合的CMS硅跟踪系统对准分析的新程序。PI从他在夸克味实验中的开创性研究中带来了这种先进的技术，并建立在约翰霍普金斯集团在CMS硅探测器方面的专业知识基础上。更广泛的影响：拟议的研究具有很强的教育意义。它将为研究生提供培训，并允许本科生参与研究。PI计划通过QuarkNet计划、年度约翰霍普金斯物理博览会以及与马里兰州科学中心的合作，开发基本粒子的实践演示和其他推广活动。与科学中心的合作由NSF从EPSI赠款中资助。PI将邀请研究生与科学中心的专家合作，创造新的展品，向公众展示LHC的研究成果。这将加强学生的公共宣传技能，履行中心的使命，以进一步研究的公众理解，并作为其他大学和中心的指导。