Hadronic Physics for Fundamental Discoveries

强子物理的基本发现

• 批准号: 1714253
• 负责人: Emilie Passemar
• 金额: $ 24万
• 依托单位: Indiana 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: 2017-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1714253&HistoricalAwards=false
• 关键词: Hadronic; Physics; Fundamental; Discoveries

Nuclear and particle physics aim to understand fundamental parameters and laws of nature at subatomic distances. Among such parameters are the masses of elementary particles: quarks and leptons. Quarks are particles that interact via the strong force -- this force binds them together in an atomic nucleus. Leptons do not feel this force; the most familiar example of a lepton is the electron that is bound to the nucleus by the electromagnetic interaction. A more exotic lepton is the neutrino, which has no electric charge and interacts only weakly. Yet, this elusive particle is proving to be a crucial link in our search for new physics. Exquisite experimental measurements over the last two decades have revealed that the neutrinos have small but nonzero masses, but the fundamental understanding of the quarks and lepton masses remains elusive. In this broader context, this project will provide the theoretical foundations needed in support of experimental efforts designed to measure with high accuracy the masses of the neutrinos and light quarks. This project will provide excellent training ground for students.An important challenge in nuclear and particle physics concerns the description of the strong force at low energy with the accuracy matching the experimental level of precision. Specifically, the aim of this project is to understand the three-pion system. This system is the final state of the decay of the eta-meson that is used for the light quark mass determination.This system is also an intermediate state of the neutrino-nucleus interaction and therefore plays an essential role in interpreting neutrino experiments. The PI and her collaborators will develop an analytical framework to accurately model three-pion interactions, based on the methods of chiral perturbation theory and dispersive techniques. This will support state-of-the-art nuclear physics experiments at Thomas Jefferson Laboratory, particularly GlueX or CLAS, as well as the upcoming precision neutrino-nucleus scattering experiments at Fermilab and worldwide.

核物理和粒子物理的目标是了解亚原子距离的基本参数和自然规律。这些参数包括基本粒子（夸克和轻子）的质量。夸克是通过强力相互作用的粒子-这种力将它们束缚在原子核中。轻子感受不到这种力;最熟悉的轻子例子是通过电磁相互作用束缚在原子核上的电子。中微子是一种更奇特的轻子，它不带电荷，相互作用很弱。然而，这种难以捉摸的粒子被证明是我们寻找新物理学的关键环节。在过去的20年里，精密的实验测量已经揭示了中微子的质量很小，但不为零，但对夸克和轻子质量的基本理解仍然是难以捉摸的。在这个更广泛的背景下，这个项目将提供所需的理论基础，以支持旨在高精度测量中微子和轻夸克质量的实验努力。该项目将为学生提供良好的训练基地。在核物理和粒子物理学中，一个重要的挑战是以与实验精度相匹配的精度描述低能强作用力。具体来说，该项目的目的是了解三π系统。该系统是用于轻夸克质量测定的η介子衰变的终态，也是中微子-核相互作用的中间态，因此在解释中微子实验中起着至关重要的作用。PI和她的合作者将基于手征微扰理论和色散技术的方法，开发一个精确模拟三π介子相互作用的分析框架。这将支持在托马斯杰斐逊实验室最先进的核物理实验，特别是GSTX或CLAS，以及即将在费米实验室和世界各地的精密中微子核散射实验。

项目成果

Spectral functions of nucleon form factors: Three-pion continua at low energies

• DOI: 10.1140/epja/i2019-12680-y
• 发表时间: 2019-01
• 期刊: The European Physical Journal A
• 作者: N. Kaiser;E. Passemar;E. Passemar

Opportunities in Flavour Physics at the HL-LHC and HE-LHC

• DOI: 10.23731/cyrm-2019-007.867
• 发表时间: 2018-12
• 作者: Ediotors A. Cerri;V. Gligorov;S. Malvezzi;J. Camalich;J. Zupan

On the statistical treatment of the Cabibbo angle anomaly

• DOI: 10.1007/jhep07(2020)068
• 发表时间: 2019-11
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Y. Grossman;E. Passemar;S. Schacht

The Belle II Physics Book

Belle II 物理书

• DOI: 10.1093/ptep/ptz106
• 发表时间: 2019-12-01
• 期刊: PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
• 影响因子: 3.5
• 作者: Kou, E.;Urquijo, P.;Zupanc, A.
• 通讯作者: Zupanc, A.

Probes of non-standard interactions from exclusive hadronic tau decays

从独特的强子 tau 衰变中探索非标准相互作用

• DOI: 10.22323/1.385.0044
• 发表时间: 2021
• 期刊: PoS CHARM2020 (2021
• 作者: Gonzàlez Solís, Sergi