Experiments with Kaons at CERN

CERN 的 Kaons 实验

• 批准号: 1806430
• 负责人: Philip Rubin
• 金额: $ 50.26万
• 依托单位: George Mason University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1806430&HistoricalAwards=false
• 关键词: Experiments; Kaons; CERN

One of the major intellectual achievements of the 20th century was the development of the Standard Model (SM) of particle physics. This model succeeded in classifying all of the elementary particles known at the time into a hierarchy of groups having similar quantum properties. The validity of this model to date was confirmed by the discovery of the Higgs boson at the Large Hadron Collider at CERN. However, the Standard Model as it currently exists leaves open many questions about the universe, including such fundamental questions as to why the Higgs mass has the value it has and why there is no antimatter in the universe. An important area to search for answers to these and other open questions about the universe, how it came to be, and why it is the way it is, is to study rare decays of kaons, as a probe of science Beyond the Standard Model (BSM). Kaons are the lightest particles containing a strange quark. The kaon physics program at the CERN Laboratory, Geneva, Switzerland includes measurements of the ultra-rare decays of kaons, including precision investigations of the weak interaction, and searches for violations of and for signatures of physics beyond the Standard Model. This project will focus on the study of ultra-rare decays.The George Mason University group is a key participant and the sole U.S. group in the CERN NA62 experiment, whose primary objective is to measure the rate of an ultra-rare decay of charged kaons, through the flavor-changing neutral current to a charged pion and a pair of neutrinos. The rate of this transition is predicted in the Standard Model, while alternative models predict very different rates. Hence this challenging measurement has the potential to provide important evidence for new physics beyond the Standard Model. George Mason has been fully engaged in the experimental design, construction, operations and analysis of data from this experiment. The broader impacts of the George Mason program are extensive, providing extensive summer research experiences for undergraduate students through the CERN Summer Research Programme, and in providing leadership and mentoring for the Virginia QuarkNet Center, which attracts high school teachers and students to the excitement of particle physics.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.

20世纪的主要知识成就之一是粒子物理学标准模型（SM）的发展。该模型成功地将当时已知的所有基本粒子分类为具有相似量子特性的组的层次结构。迄今为止，通过发现Higgs玻色子在CERN的大型强子对撞机上发现了该模型的有效性。但是，目前存在的标准模型为宇宙留下了许多问题，包括有关希格斯质量为何具有其价值以及为什么宇宙中没有反物质的基本问题。寻找有关宇宙，如何发展的这些和其他开放问题答案的重要领域，以及为什么它的样子是研究Kaons的罕见衰减，以此作为对标准模型（BSM）的科学探究。 Kaons是包含奇怪夸克的最轻颗粒。瑞士日内瓦CERN实验室的KAON物理计划包括测量Kaons的超稀有衰变，包括对弱相互作用的精确研究，以及寻找违反标准模型以外物理学的违反和签名的签名。 该项目将着重于对超稀有衰变的研究。乔治·梅森大学（George Mason University Group）是CERN NA62实验中的主要参与者，是美国唯一的美国组，其主要目的是通过带电的pion和一对中性群来衡量带有风味的中性电流的超稀有的带电Kaons的速度。 在标准模型中预测了这种过渡的速率，而替代模型预测了非常不同的速率。 因此，这种具有挑战性的测量可能有可能为超出标准模型以外的新物理学提供重要证据。 乔治·梅森（George Mason）全面参与了该实验中数据的实验设计，构建，操作和分析。乔治·梅森（George Mason）计划的更广泛影响是广泛的，通过CERN夏季研究计划为本科生提供了广泛的夏季研究经验，并为弗吉尼亚Quarknet中心提供领导力和指导，从而吸引了高中教师和学生的兴奋，以激发粒子物理。 标准。

项目成果

Search for a feebly interacting particle X in the decay K+ → π+X

在衰变 K → X 中寻找微弱相互作用的粒子 X

• DOI: 10.1007/jhep03(2021)058
• 发表时间: 2021
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Cortina Gil, E.;Kleimenova, A.;Minucci, E.;Padolski, S.;Petrov, P.;Shaikhiev, A.;Volpe, R.;Numao, T.;Velghe, B.;Bryman, D.
• 通讯作者: Bryman, D.

Search for Lepton Number and Flavor Violation in K+ and π0 Decays

搜索 K 和 Ï0 衰变中的轻子数和味道违规

• DOI: 10.1103/physrevlett.127.131802
• 发表时间: 2021
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Aliberti, R.;Ambrosino, F.;Ammendola, R.;Angelucci, B.;Antonelli, A.;Anzivino, G.;Arcidiacono, R.;Bache, T.;Baeva, A.;Baigarashev, D.
• 通讯作者: Baigarashev, D.

Search for K+ decays to a muon and invisible particles

寻找 K 衰变为 μ 子和不可见粒子

• DOI: 10.1016/j.physletb.2021.136259
• 发表时间: 2021
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Cortina Gil, E.;Kleimenova, A.;Minucci, E.;Padolski, S.;Petrov, P.;Shaikhiev, A.;Volpe, R.;Numao, T.;Petrov, Y.;Velghe, B.
• 通讯作者: Velghe, B.

An investigation of the very rare $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay

对非常罕见的 $$ {K}^{ } o {pi}^{ } u overline{ u} $$ 衰减的调查

• DOI: 10.1007/jhep11(2020)042
• 发表时间: 2020
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Cortina Gil, E.;Kleimenova, A.;Minucci, E.;Padolski, S.;Petrov, P.;Shaikhiev, A.;Volpe, R.;Numao, T.;Velghe, B.;Bryman, D.
• 通讯作者: Bryman, D.

Performance of the NA62 trigger system

NA62触发系统的性能

• DOI: 10.1007/jhep03(2023)122
• 发表时间: 2023
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Cortina Gil, E.;Kleimenova, A.;Minucci, E.;Padolski, S.;Petrov, P.;Shaikhiev, A.;Volpe, R.;Numao, T.;Petrov, Y.;Velghe, B.
• 通讯作者: Velghe, B.