High Energy Physics Research at the CMS Experiment

粒子物理的标准模型一直是一个成功的理论，与几十年来涉及弱相互作用、电磁相互作用和强相互作用的实验观察相一致。在大型强子对撞机上发现希格斯玻色子进一步证实了这一成功。然而，标准模型仍然是一个不完整的理论。在大型强子对撞机上对希格斯玻色子性质的精确测量可以提供对标准模型以外的新物理的洞察。这项研究的重点是利用大型强子对撞机(LHC)上的致密介子螺线管(CMS)实验来寻找新粒子，研究希格斯玻色子的衰变，进行其他标准模型(SM)过程的精确测量，使用JET子结构重建高动量天体，并扩展CMS粒子跟踪探测器的能力，以提高其对高碰撞率的接受度和容忍度。研究活动还将通过QuarkNet和科学奥林匹克竞赛的推广工作促进与高中教师和学生的合作，并通过大学的女性科学和工程倡议促进女性参与STEM学科。这项研究将使用先进的方法来识别罕见信号和解决系统不确定性，以寻找超越标准模型(BSM)物理学的微妙特征。这些措施包括详细研究希格斯玻色子的性质，扩大对BSM物理的搜索计划，以及系统地改进技术以最大限度地发挥物理潜力。这项研究还将扩展CMS跟踪探测器的能力，以处理高亮度LHC的条件，扩大其几何覆盖范围，并将跟踪信息添加到Far-Forward粒子流算法中。此外，还将对高度洛伦兹增强的SM-Higgs玻色子衰变到底部夸克-反夸克对的性质进行研究，以全面探索Higgs与夸克的耦合，以及在更高质量的未被探索的信号中寻找新的现象，如新的重矢量玻色子。该计划还将开发和维护重口味和轻口味喷气式飞机的物体重建，以及执行SM物理过程的测量，包括与重口味喷气式飞机相关的W/Z/伽马生产，以及对喷气式飞机量子色动力学演化的详细了解。该奖项反映了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。

The Standard Model of particle physics has been a successful theory, agreeing with decades of experimental observations involving weak, electromagnetic, and strong interactions. The discovery of the Higgs boson at the LHC was further confirmation of this success. However, the Standard Model remains an incomplete theory. The precise measurements of the properties of the Higgs boson at the LHC could provide insight into new physics beyond the Standard Model. This research focuses on exploiting the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) to search for new particles, study the decay of Higgs bosons, carry out precision measurements of other Standard Model (SM) processes, use jet substructure to reconstruct high-momentum objects, and extend the capabilities of the CMS particle-tracking detector to increase its acceptance and tolerance to high collision rates. The research activity will also foster collaboration with high school teachers and students through the QuarkNet and Science Olympiad outreach efforts, and foster female participation in STEM disciplines through the university's Women in Science and Engineering initiative.This research will search for subtle signatures of Beyond Standard Model (BSM) physics using advanced methods for identifying rare signals and addressing systematic uncertainties. These include detailed studies of the properties of the Higgs boson, extending the search program for BSM physics, and systematically improving techniques to maximize the physics potential. This research will also extend the capabilities of the CMS tracking detector to handle conditions at the High Luminosity LHC, extend its geometric coverage, and add tracking information to the far-forward particle flow algorithm. In addition, studies will be performed on the properties of highly Lorentz-boosted SM Higgs bosons decaying to bottom quark-antiquark pairs to fully explore the Higgs coupling to quarks, as well as to search for new phenomena in unexplored signatures at higher masses, such as new heavy vector bosons. This program will also develop and maintain object reconstruction for heavy- and light-flavor jets, as well as perform measurements of SM physics processes including production of W/Z/gamma in association with heavy flavor jets, and detailed understanding of the quantum chromodynamic evolution of jets.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.