Investigations in Proton-Proton Collisions at the Large Hadron Collider

大型强子对撞机质子-质子碰撞的研究

• 批准号: 1707812
• 负责人: Raymond Brock
• 金额: $ 240万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707812&HistoricalAwards=false
• 关键词: Investigations; Proton; Collisions; Large; Hadron

Particle physics considers a vast range of scientific questions, from subatomic to cosmic scales. The Michigan State University (MSU) Group supported through this award investigates such questions through experimentation at the highest available collision energies at accelerators. These studies are relevant to the understanding of the Universe at its most fundamental level in the fleeting fraction of a second just after the Big Bang, and to why we see the Universe as we do now. To meet the challenges of this quest, new theories are advanced, new detectors and accelerators are developed and built, and new computing and analytical methodologies are created, all of which have significant broader impact for the training of young scientists in the near term and the advancement of technological benefits to society over the longer term. The discovery of the Higgs boson in 2012 at the CERN Large Hadron Collider (LHC) located in Geneva, Switzerland, completed the standard model of particle physics. Now elucidating the dynamics underlying this model stands as a major challenge for particle physics. Precision measurements, especially the production and decay of the Higgs boson, and searches for new particles and forces dominate the energy frontier mission. The Michigan State University (MSU) particle physics group is engaged in this research at the LHC as members of the ATLAS experiment. The group is making significant contributions to ongoing experimental operations, to new and planned upgrades of the experiment, to large-scale computing, and to physics analyses. The MSU group is targeting its physics studies under four general categories: the search for new vector bosons; the study of Higgs boson production and decay; the physics of top quarks, singly and in pairs; and the study of the strong interactions, especially jet production in association with vector bosons and heavy quarks. The group has a strong track record of collaboration with theoretical physicists on both quantum chromodynamics and electroweak processes. This is an important bridge between experimental and theoretical understanding of ongoing measurements.Members of the MSU high energy physics group have traditionally had a strong involvement in education and outreach, and the group has been especially innovative in informal education. A notable element of these activities has been the development of a planetarium show on the ATLAS experiment at the Large Hadron Collider (LHC). In collaboration with other US groups on the ATLAS experiment, the group has also just developed a major planetarium production on dark matter.

粒子物理学考虑了从亚原子到宇宙尺度的广泛的科学问题。密歇根州立大学（MSU）集团通过该奖项的支持，通过实验在加速器的最高可用碰撞能量调查这些问题。这些研究关系到在大爆炸后短短一秒钟内对宇宙最基本的理解，以及为什么我们现在看到的宇宙。为了迎接这一探索的挑战，提出了新的理论，开发和建造了新的探测器和加速器，并创造了新的计算和分析方法，所有这些都对短期内培训青年科学家和长期提高技术对社会的益处产生了广泛的影响。2012年在位于瑞士日内瓦的欧洲核子研究中心大型强子对撞机（LHC）上发现希格斯玻色子，完成了粒子物理学的标准模型。现在，阐明这个模型背后的动力学是粒子物理学的一个主要挑战。精确的测量，特别是希格斯玻色子的产生和衰变，以及寻找新的粒子和力主导着能源前沿使命。密歇根州立大学（MSU）粒子物理小组作为ATLAS实验的成员在LHC从事这项研究。该小组正在进行的实验操作，新的和计划的实验升级，大规模计算和物理分析作出重大贡献。 密歇根州立大学小组的物理学研究分为四个大类：寻找新的矢量玻色子;研究希格斯玻色子的产生和衰变;顶夸克的物理学，单独和成对;以及研究强相互作用，特别是与矢量玻色子和重夸克有关的喷流产生。 该小组与理论物理学家在量子色动力学和电弱过程方面有着良好的合作记录。 这是一个重要的桥梁之间的实验和理论的理解正在进行的测量。成员的MSU高能物理组传统上有很强的参与教育和推广，该集团一直在非正式教育特别创新。这些活动的一个值得注意的部分是在大型强子对撞机的ATLAS实验上开发了一个天文馆展览。 通过与美国其他团队合作进行ATLAS实验，该团队还刚刚开发了一个关于暗物质的主要天文馆产品。

项目成果

Search for heavy resonances decaying to a photon and a hadronically decaying Z/W/H boson in pp collisions at s=13 TeV with the ATLAS detector

使用 ATLAS 探测器在 s=13-TeV 的 pp 碰撞中搜索衰变为光子的重共振和强子衰变的 Z/W/H 玻色子

• DOI: 10.1103/physrevd.98.032015
• 发表时间: 2018
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Aaboud, M.;Aad, G.;Abbott, B.;Abdinov, O.;Abeloos, B.;Abidi, S. H.;AbouZeid, O. S.;Abraham, N. L.;Abramowicz, H.;Abreu, H.
• 通讯作者: Abreu, H.

New method for reducing parton distribution function uncertainties in the high-mass Drell-Yan spectrum

• DOI: 10.1103/physrevd.99.054004
• 发表时间: 2018-09
• 期刊: Physical Review D
• 影响因子: 5
• 作者: C. Willis;R. Brock;D. Hayden;T. Hou;J. Isaacson;C. Schmidt;C. Yuan

Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple b-jets with the ATLAS detector

• DOI: 10.1007/jhep07(2018)089
• 发表时间: 2018-03
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: M. Aaboud;G. Aad;B. Abbott;O. Abdinov;Baptiste Abeloos;S. Abidi;O. AbouZeid;N. Abraham

Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb−1 of pp collisions at s=13TeV with the ATLAS experiment

• DOI: 10.1016/j.physletb.2019.135082
• 发表时间: 2019-08
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Atlas Collaboration