CAREER: Studies in Frontier Particle Physics

项目描述：该提案支持实验粒子物理学前沿领域的研究。该计划的目标是领导欧洲核子研究中心大型强子对撞机(LHC)的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。智力价值：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，以及我们宇宙中缺乏反物质。拟议中的研究将最大限度地发挥大型强子对撞机CMS实验的科学价值。在该计划的头两年，将使用由PI开发的新技术，通过对其组件进行仔细的比对分析，优化探测器的发现。在接下来的几年里，优化后的探测器将被用作发现新的神秘粒子的工具。新对撞机设施前所未有的能量规模将开启一系列广泛的物理课题。一种新的神秘希格斯粒子有望对所有粒子的质量属性负责。对其衰变的角度分析将是理解其起源的一种方式。通过他在夸克味道物理领域的发现，PI已经拥有了解开复杂角度结构的工具。希格斯粒子可能并不孤单，也许需要一个更普遍的对称性来解释物理学的基本定律。一种流行的对称性预言了重的超对称粒子。该计划未来几年的研究方向将以第一批数据为指导。在能量前沿发现新粒子将取决于将它们与高能碰撞产生的随机粒子的巨大背景区分开来的能力。了解跟踪粒子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，并成为该计划成功的决定性因素。PI计划使用光学测量测量和轨道信息的组合来对CMS硅跟踪系统的对准分析进行新的程序。PI从他在夸克味道实验中的开创性研究中带来了这项先进的技术，并建立在约翰·霍普金斯小组在CMS硅探测器方面的专业知识上。广泛的影响：拟议的研究具有很强的教育成分。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、一年一度的约翰·霍普金斯物理博览会以及与马里兰科学中心的合作，开发基本粒子的动手演示和其他外联活动。与科学中心的合作得到了美国国家科学基金会EPSI拨款的资助。PI将邀请研究生与科学中心的专家合作，创造新的展品，向公众传达大型强子对撞机的研究成果。这将加强学生的公共宣传技能，履行中心的使命，促进公众对研究的理解，并对其他大学和中心起到指导作用。

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.