Research in High Energy Physics on the CMS Experiment

这是一个在欧洲核子研究中心的大型强子对撞机(LHC)上进行紧凑型Muon螺线管(CMS)实验的基础研究项目。大型强子对撞机上希格斯机制的发现引发了关于宇宙的新问题：为什么希格斯玻色子如此轻？是否存在不止一个希格斯玻色子粒子？希格斯玻色子产生了吗？它是否以粒子物理标准模型预测的速度衰变？在这些问题的推动下，这个项目将包括在大型强子对撞机上的紧凑型Muon螺线管(CMS)实验中寻找新的粒子。在接下来的5年里，CMS探测器组件将被更换，以应对升级的高亮度大型强子对撞机的高辐射环境，这将提供极高的质子-质子对撞率。该项目还包括为建造和测试新的像素探测器做出贡献，这是CMS在升级后实现其物理目标的必要和关键。CMS正向像素探测器的升级将需要开发创新的耐辐射技术，这些技术有可能直接延长用于空间研究和医疗应用的探测器的寿命。PNW小组将继续致力于本科生研究、社区推广、K-12参与和教师培训。通过参与大型强子对撞机的升级，他们将让本科生参与探测器的建造和测试工作。PNW QuarkNet中心将举办一年一度的大师班，当地高中的学生将有机会访问大学并分析真实的CMS数据，以及一年一度的K-12教师培训研讨会。通过他们的研究计划、课程和QuarkNet中心，他们计划使未被充分代表的群体参与物理研究，并激励和培训下一代年轻科学家和工程师。普渡大学西北大学(PNW)的高能物理小组将他们的努力集中在CMS实验的正向像素探测器子系统上。在为正向像素探测器的建设做出贡献后，他们目前的重点是高亮度升级的组装和测试，并确保CMS实验的物理数据集的质量。在发现标准模型希格斯玻色子的基础上，PNW小组还致力于寻找衰变到顶夸克对的新的重粒子，衰变到两个Z玻色子的新的自旋2重粒子，以及新的衰变到中等共振的新的重共振。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This is a project to carry out fundamental research with the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) at CERN. The discovery of the Higgs mechanism at the LHC motivates new questions about the universe: Why is the Higgs boson so light? Is there more than one Higgs Boson particle? Is the Higgs boson produced and does it decay at the rate predicted by the Standard Model of particle physics? Motivated by these questions, this project will include searches for new particles in the Compact Muon Solenoid (CMS) experiment at the LHC. Over the next 5 years, CMS detector components will be replaced to cope with the high radiation environment at the upgraded High Luminosity LHC, which will deliver an extremely high rate of proton-proton collisions. This project also includes contributions to the construction and testing of a new pixel detector, which is both necessary and critical for CMS to perform its physics goals after the upgrade. The upgrade of the CMS Forward Pixel detector will require the development of innovative radiation-tolerant technologies, which have the potential to directly enhance the lifespan of detectors used in space research and in medical applications. The PNW group will continue its commitments to undergraduate research, community outreach, K-12 engagement, and teacher training. Through their participation in the LHC upgrades they will engage undergraduate students in detector construction and testing efforts. The PNW QuarkNet center will host an annual Masterclass, where students from local high schools will have the opportunity to visit the university and analyze real CMS data, and an annual K-12 teacher training workshop. Through their research program, courses, and QuarkNet center, they plan to enable the participation of underrepresented groups in physics research, and to inspire and train the next generation of young scientists and engineers.The high energy physics group at Purdue University Northwest (PNW) focuses their effort on the Forward Pixel detector subsystem for the CMS experiment. After their contributions to the construction of the Forward Pixel detectors, their current thrust is on the assembly and testing of the high luminosity upgrade and assuring the quality of physics datasets to the CMS experiment. Building on the discovery of the Standard Model Higgs boson, the PNW group is also working on searches for new heavy particles that decay to a top quark pair, new spin-2 heavy particles that decay to two Z bosons, and a new search for a new heavy resonance decaying to intermediate resonances.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.