Pursuing a Non-Standard Higgs Boson Off the Beaten Path

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，对其他标准模型(SM)过程进行精确测量，寻找新的超对称粒子，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促进与高中教师和学生的合作，并通过宇宙线天文台项目(CROP)促进公众的合作。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，寻找超越标准模型(BSM)物理的微妙特征。这一奖项的研究将集中在识别碰撞事件中的同号轻子。这些可能表明了一种新的超对称粒子(SUSY)或其他BSM物理的奇异物理模型。这项研究还将扩展CMS跟踪探测器的能力，以处理高亮度大型强子对撞机的条件，扩大其几何覆盖范围，并将跟踪信息添加到远向粒子流分析。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, search for new Supersymmetry particles, 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 the general public through the Cosmic Ray Observatory Project (CROP) project.This research will search for subtle signatures of Beyond Standard Model (BSM) physics using advanced methods for identifying rare signals and addressing systematic uncertainties. The search in this award will concentrate on identifying same-sign leptons in the event collisions. These can indicate a new Supersymmetric particle (SUSY) or other exotic physics models of BSM physics. 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 analysis.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.