CAREER: Search for Dark Matter in Final States with Jets and Missing Transverse Momentum using the CMS Detector

粒子物理的标准模型(SM)是一个成功的理论，它解释了过去几十年中涉及弱相互作用、电磁相互作用和强相互作用的实验观测。然而，随着实验的深入，随着能量的增加，SM显然是一个不完整的理论；例如，它无法解释天文暗物质。这项在欧洲核子研究中心大型强子对撞机的CMS实验中的工作，试图探索多种途径来发现和表征暗物质粒子的性质，并为高亮度大型强子对撞机(HL-LHC)的升级做出贡献。研究和教育活动将通过为本科生提供国际合作研究机会，并通过开发一门新课程，将开源数据用于高年级本科课程，来整合研究和教育活动。该项目的目标之一是探索与一个或多个喷流和总体动量不平衡的签名，以发现和表征暗物质粒子。此外，希格斯玻色子将被用作发现的工具，通过寻找它的衰变到看不见的粒子。还将探索在实时事件选择(触发器)和分析水平上抑制喷射和丢失横向动量重建中额外的质子-质子相互作用的影响的技术，以最大限度地提高对暗物质搜索的敏感性。高光度大型强子对撞机将增加发现新粒子的潜力，为暗物质过程提供前所未有的敏感性。然而，在大型强子对撞机上预计的每束200个质子-质子相互作用将构成严峻的挑战，因为CMS的数据速率将显著增长，子探测器的读数将非常苛刻。为了充分处理具有挑战性的操作条件和高数据带宽，CMS实验的几乎所有子探测器都将进行升级。这项工作将为CMS探测器的内跟踪器子系统开发新的读出电子设备，作为HL LHC升级的重要组成部分。PI计划建立重新预测物理结果的程序，并提供搜索新粒子的公开可用的软件实现。计划中的工作通过体验式学习为将参与电子开发项目的本科生和研究生提供了教育机会。除了直接的研究经验，PI的目标是通过重新设计欧洲核子研究中心波士顿大学留学项目的学术部分来整合教育和研究，该项目概括了学术课程和实践研究机会。PI还将在波士顿大学主办本科生物理女性会议，利用它通过参与会议的Step Up大使促进与高中的对话。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。

The Standard Model (SM) of particle physics has been a successful theory, explaining experimental observations involving weak, electromagnetic, and strong interactions over the last few decades. However, as experiments probe deeper with increasing energies, it is evident that the SM is an incomplete theory; for example, it fails to account for astronomical dark matter. This work at the CMS Experiment at the CERN LHC, seeks to explore multiple avenues to discover and characterize the nature of dark matter particles and to contribute to the High-Luminosity LHC (HL-LHC) upgrade. Research and education activities will be integrated by providing international collaborative research opportunities for undergraduate students and by developing a new course that uses open-source data for the upper-division undergraduate curriculum.One goal of this project is to explore signatures with one or more jets and an overall momentum imbalance to discover and characterize dark matter particles. In addition, the Higgs boson will be used as a tool for discovery by searching for its decay to invisible particles. Techniques to suppress the effects of additional proton-proton interactions in jet and missing transverse momentum reconstruction both at the real-time event selection (trigger) and analysis levels will also be explored to maximize the sensitivity to the dark matter searches. The High Luminosity LHC will increase the discovery potential for new particles, providing unprecedented sensitivity to dark matter processes. However, the projected 200 proton-proton interactions per bunch crossing at the LHC will pose severe challenges as the data rates in CMS will grow significantly and the readout of the sub-detectors will be very demanding. To adequately handle the challenging operating conditions and high data bandwidths, nearly all sub-detectors of the CMS experiment will be upgraded. The work will develop new readout electronics for the Inner Tracker sub-system of the CMS detector as an important element of the HL LHC upgrade.The PI plans to establish procedures for recasting physics results and to provide a publicly available software implementation of the searches for new particles. The planned work provides an educational opportunity through experiential learning to undergraduate and graduate students who will participate in the electronics development project. In addition to direct research experience, the PI aims to integrate education and research through a redesign of the academic components of a Boston University study abroad program at CERN that encapsulates academic courses and hands-on research opportunities. The PI will also host the Conference for Undergraduate Women in Physics at Boston University, using it to foster dialogue with high schools through the involvement of STEP-UP Ambassadors in the conference.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.