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

职业：使用 CMS 探测器搜索带有喷流和缺失横向动量的最终状态的暗物质

• 批准号: 2046626
• 负责人: Zeynep Demiragli
• 金额: $ 96.14万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-04-01 至 2026-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2046626&HistoricalAwards=false
• 关键词: CAREER; Search; Dark; Matter; Final

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.

粒子物理学的标准模型（SM）是一个成功的理论，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，随着实验随着能量的增加而深入探索，很明显SM是一个不完整的理论;例如，它无法解释天文学暗物质。CERN LHC CMS实验的这项工作旨在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LHC（HL-LHC）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以及为高年级本科课程开发使用开源数据的新课程来整合。该项目的一个目标是探索具有一个或多个喷流和整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，通过寻找其衰变为不可见粒子。还将探索在实时事件选择（触发）和分析水平上抑制喷流中额外质子-质子相互作用和缺失横向动量重建的影响的技术，以最大限度地提高对暗物质搜索的灵敏度。高亮度LHC将增加新粒子的发现潜力，为暗物质过程提供前所未有的灵敏度。然而，预计在LHC每个束团交叉200个质子-质子相互作用将构成严峻的挑战，因为CMS中的数据速率将显着增长，子探测器的读出将非常苛刻。为了充分应对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探测器的内部跟踪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计划建立重铸物理结果的程序，并提供一个公开可用的软件实现新粒子的搜索。计划的工作提供了一个教育机会，通过体验式学习的本科生和研究生谁将参与电子开发项目。除了直接的研究经验，PI旨在通过重新设计欧洲核子研究组织的波士顿大学海外学习计划的学术组成部分，将教育和研究整合在一起，该计划包含学术课程和实践研究机会。PI还将在波士顿大学举办物理学本科女性会议，通过STEP-UP大使参与会议，利用该会议促进与高中的对话。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Measurement of the Z boson differential production cross section using its invisible decay mode (Z → $$ \nu \overline{\nu} $$) in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

• DOI: 10.1007/jhep05(2021)205
• 发表时间: 2020-12
• 作者: Cms Collaboration

Detector R&D needs for the next generation $e^+e^-$ collider

• 发表时间: 2023-06
• 作者: A. Apresyan;M. Artuso;J. Brau;H. Chen;M. Demarteau;Z. Demiragli;S. Eno;J. Gonski;P. Grannis;H. Gray;O. Gutsche;C. Haber;M. Hohlmann;J. Hirschauer;G. Iakovidis;K. Jakobs;A. Lankford;C. Peña;S. Rajagopalan;J. Strube;C. Tully;C. Vernieri;A. White;G. Wilson;S. Xie;Z. Ye;J. Zhang;B. Zhou