RUI: The Three-Dimensional Momentum and Spin Structure of the Nucleon in QCD

RUI：QCD 中核子的三维动量和自旋结构

• 批准号: 2012002
• 负责人: Alexey Prokudin
• 金额: $ 18.9万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2012002&HistoricalAwards=false
• 关键词: RUI; Three; Dimensional; Momentum; Spin

The visible universe is made up of nucleons: protons and neutrons, and electrons. Nucleons themselves are interacting dynamical systems of partons, quarks and gluons, the degrees of freedom of the theory of strong interaction, Quantum Chromo Dynamics (QCD). Unfolding the QCD quark and gluon structure of nucleons is one of the highest priorities of nuclear physics. The main objective of this project is to advance theoretical and phenomenological studies of the three-dimensional (3D) momentum and spin structure of the nucleon in QCD and to map its internal landscape encoded in the Transverse Momentum Dependent parton distribution and fragmentation functions. The PI will contribute to the education of a diverse, globally-engaged workforce with world-class skills by providing and developing courses on modern statistics and nuclear physics, organizing and teaching summer schools for graduate students, and running annual workshops on the 3D structure of the nucleon.The scientific goals of this project are to precisely extract the 3D nucleon structure and Transverse Momentum Dependent distribution and fragmentation functions from the existing experimental data. TMDs are intimately related to the correlations of parton spin and motion with the spin of the nucleon and generate Spin Asymmetries in scattering processes. The project is intended to unify existing formalisms of the description of the 3D nucleon structure, and ultimately explore the origin of the Spin Asymmetries in various processes. The data from past and existing facilities, such as HERMES (DESY), COMPASS (CERN), and Jefferson Lab, BELLE (KEK), BaBar (SLAC), BESIII (Beijing), RHIC (BNL), LHC (CERN), will be used. This study will be performed for constructing the global QCD fit of the data and unifying collinear and TMD physics. The PI will study TMD evolution, extract the non-perturbative input from the experimental data and use it for the description and prediction of future data. This project will expand the impact of the existing programs at Jefferson Lab and Brookhaven National Laboratory, and of the future Electron Ion Collider in the USA by performing phenomenological and theoretical studies, providing analysis, explanation of present data, and predictions for future measurements.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.

可见的宇宙是由核子、质子、中子和电子组成的。核子本身是粒子、夸克和胶子相互作用的动力系统，是强相互作用理论的自由度，量子色动力学（QCD）。揭示核子的QCD夸克和胶子结构是核物理学的重中之重之一。本项目的主要目标是推进量子光盘中核子的三维动量和自旋结构的理论和现象学研究，并绘制其内部景观编码在横向动量依赖的部分子分布和碎片函数中。PI将通过提供和开发现代统计和核物理课程，为研究生组织和教授暑期学校，以及举办关于核子3D结构的年度研讨会，为培养具有世界一流技能的多样化、全球参与的劳动力做出贡献。该项目的科学目标是从现有的实验数据中精确提取三维核子结构和横向动量依赖分布和破碎函数。tmd与部分子自旋和运动与核子自旋的相关性密切相关，并在散射过程中产生自旋不对称。该项目旨在统一现有的三维核子结构描述形式，并最终探索各种过程中自旋不对称的起源。将使用过去和现有设施的数据，如HERMES （DESY）、COMPASS （CERN）和Jefferson实验室、BELLE （KEK）、BaBar （SLAC）、BESIII（北京）、RHIC （BNL）、LHC （CERN）。本研究旨在构建数据的全局QCD拟合，并统一共线和TMD物理。PI将研究TMD演化，从实验数据中提取非摄动输入，并将其用于描述和预测未来数据。该项目将通过现象学和理论研究，提供对当前数据的分析、解释和对未来测量的预测，扩大杰斐逊实验室和布鲁克海文国家实验室现有项目的影响，以及未来美国电子离子对撞机的影响。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识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

SIDIS-RC EvGen: A Monte-Carlo event generator of semi-inclusive deep inelastic scattering with the lowest-order QED radiative corrections

SIDIS-RC EvGen：具有最低阶 QED 辐射校正的半包容深度非弹性散射的蒙特卡罗事件发生器

• DOI: 10.1016/j.cpc.2023.108702
• 发表时间: 2023
• 期刊: Computer Physics Communications
• 影响因子: 6.3
• 作者: Byer, Duane;Khachatryan, Vladimir;Gao, Haiyan;Akushevich, Igor;Ilyichev, Alexander;Peng, Chao;Prokudin, Alexei;Srednyak, Stan;Zhao, Zhiwen
• 通讯作者: Zhao, Zhiwen

Extraction of the Sivers function from SIDIS, Drell-Yan, and W±/Z boson production data with TMD evolution

使用 TMD 演化从 SIDIS、Drell-Yan 和 W±/Z 玻色子产生数据中提取 Sivers 函数

• DOI: 10.1007/jhep05(2021)151
• 发表时间: 2021
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Bury, Marcin;Prokudin, Alexei;Vladimirov, Alexey
• 通讯作者: Vladimirov, Alexey

New tool for kinematic regime estimation in semi-inclusive deep-inelastic scattering

• DOI: 10.1007/jhep04(2022)084
• 发表时间: 2022-01
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: M. Boglione;M. Diefenthaler;S. Dolan;L. Gamberg;W. Melnitchouk;D. Pitonyak;A. Prokudin;N. Sato;Z. Scalyer

Jet-based measurements of Sivers and Collins asymmetries at the future electron-ion collider

• DOI: 10.1103/physrevd.102.074015
• 发表时间: 2020-07
• 期刊: Physical Review D
• 影响因子: 5
• 作者: M. Arratia;Z. Kang;A. Prokudin;F. Ringer

Precision studies of QCD in the low energy domain of the EIC

• DOI: 10.1016/j.ppnp.2023.104032
• 发表时间: 2022-11
• 期刊: Progress in Particle and Nuclear Physics
• 影响因子: 9.6
• 作者: V. Burkert;L. Elouadrhiri;A. Afanasev;J. Arrington;M. Contalbrigo;W. Cosyn;A. Deshpande;D. Glazier-D.-G