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）上进行紧凑型介子螺线管（CMS）实验的基础研究项目。在大型强子对撞机上发现希格斯机制引发了关于宇宙的新问题：为什么希格斯玻色子这么轻？有不止一个希格斯玻色子吗？希格斯玻色子的产生和衰变速度是否符合粒子物理学标准模型所预测的？在这些问题的推动下，该项目将包括在大型强子对撞机的紧凑型介子螺线管（CMS）实验中寻找新粒子。在未来5年内，CMS探测器组件将被替换，以应对升级后的高亮度LHC的高辐射环境，这将提供极高的质子-质子碰撞率。该项目还包括对新的像素探测器的构建和测试的贡献，这对于CMS在升级后执行其物理目标是必要和关键的。CMS前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空间研究和医疗应用中使用的探测器的寿命。PNW小组将继续致力于本科生研究、社区外展、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设和测试工作。PNW QuarkNet中心将举办一年一度的大师班，来自当地高中的学生将有机会参观大学并分析真实的CMS数据，并举办一年一度的K-12教师培训研讨会。通过他们的研究项目、课程和QuarkNet中心，他们计划让未被充分代表的群体参与到物理研究中来，并激励和培养下一代年轻的科学家和工程师。普渡大学西北分校（PNW）的高能物理小组将他们的工作重点放在CMS实验的前向像素探测器子系统上。在为前向像素探测器的建设做出贡献之后，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成顶夸克对的新重粒子，衰变成两个Z玻色子的新自旋-2重粒子，以及衰变成中间共振的新重共振。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值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.