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量表的各种科学问题。密歇根州立大学（MSU）小组通过该奖项支持了通过在加速器的最高可用碰撞能量实验中调查了此​​类问题。这些研究与大爆炸后一秒钟短暂的一小部分中对宇宙的理解有关，以及为什么我们像现在这样看到宇宙。为了应对这一任务的挑战，新的理论是先进的，开发和建造了新的探测器和加速器，并创建了新的计算方法和分析方法，所有这些方法对在短期内对年轻科学家的培训以及在较长任期内对社会的技术益处的培训产生了更大的影响。 2012年，位于瑞士日内瓦的CERN大型强子对撞机（LHC）的Higgs玻色子发现了粒子物理学的标准模型。现在阐明该模型的动力学是粒子物理学的主要挑战。精确测量，尤其是希格斯玻色子的生产和衰变，并寻找新的粒子和力主导了能量边界任务。密歇根州立大学（MSU）粒子物理小组在LHC作为Atlas实验的成员从事这项研究。该小组正在为正在进行的实验操作，实验的新升级和计划的升级，大规模计算以及物理分析做出重大贡献。 MSU组针对其物理研究以四个一般类别为目标：寻找新的向量玻色子；希格斯玻色子生产和衰变的研究；顶级夸克的物理学，成对成对；以及对强烈相互作用的研究，尤其是与载体玻色子和重型夸克有关的喷气生产。 该小组与理论物理学家在量子染色体动力学和电动过程中的合作有良好的记录。 这是对正在进行的测量的实验和理论理解之间的重要桥梁。传统上，密歇根州立大学的高能物理小组的会员参与了教育和外展，并且该小组在非正式教育中尤其创新。这些活动的一个显着要素是在大型强子对撞机（LHC）的Atlas实验上的天文馆展示的发展。 与其他美国团体在Atlas实验上的合作，该小组还刚刚开发了有关暗物质的大型天文馆生产。

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 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

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