Quark distribution amplitudes and form factors of the nucleon resonances in QCD

QCD 中核子共振的夸克分布幅度和形状因子

• 批准号: 170702607
• 负责人: Professor Dr. Vladimir Braun
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/170702607?language=en
• 关键词: Quark; distribution; amplitudes; form; factors

Light-Cone Sum Rules (LCSRs) have become an established technique for the QCD calculation of hadronic form factors and related observables in the range of intermediate momentum transfers, of the order of a few GeV². However, for processes involving baryons the sum rules exist to the tree level only, which roughly corresponds to the approximation of the parton model. The goal of this project is to advance such calculations to the next-to-leading order (NLO) in the strong coupling, which has become standard for meson decays.

光锥求和规则（Light-Cone Sum Rules，LCSRs）已经成为QCD计算强子形状因子和相关观测量的一种成熟的技术，在几个GeV²量级的中间动量转移范围内。然而，对于涉及重子的过程，求和规则只存在于树级，这大致对应于部分子模型的近似。该项目的目标是将这种计算推进到强耦合中的次领先阶（NLO），这已经成为介子衰变的标准。

项目成果

Nucleon Form Factors and Distribution Amplitudes in QCD

QCD 中的核子形状因子和分布幅度

• DOI: 10.1103/physrevd.88.114021
• 发表时间: 2013
• 期刊: Physical Review D
• 影响因子: 5
• 作者: I. V. Anikin;V. M. Braun;N. Offen
• 通讯作者: N. Offen

Higher twist nucleon distribution amplitudes in Wandzura-Wilczek approximation

Wandzura-Wilczek 近似中更高的扭曲核子分布幅度

• DOI: 10.1103/physrevd.89.014011
• 发表时间: 2014
• 期刊: Physical Review D
• 影响因子: 5
• 作者: I. V. Anikin;A. N. Manashov
• 通讯作者: A. N. Manashov