Connecting Euclidean to light-cone correlations: from flavor nonsinglet in forward kinematics to flavor singlet in non-forward kinematics

IF 5 1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS
Fei Yao, Yao Ji, Jian-Hui Zhang
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引用次数: 2

Abstract

A bstract We present a unified framework for the perturbative factorization connecting Euclidean correlations to light-cone correlations. Starting from nonlocal quark and gluon bilinear correlators, we derive the relevant hard-matching kernel up to the next-to-leading-order, both for the flavor singlet and non-singlet combinations, in non-forward and forward kinematics, and in coordinate and momentum space. The results for the generalized distribution functions (GPDs), parton distribution functions (PDFs), and distribution amplitudes (DAs) are obtained by choosing appropriate kinematics. The renormalization and matching are done in a state-of-the-art scheme. We also clarify some issues raised on the perturbative matching of GPDs in the literature. Our results provide a complete manual for extracting all leading-twist GPDs, PDFs as well as DAs from lattice simulations of Euclidean correlations in a state-of-the-art strategy, either in coordinate or in momentum space factorization approach.
连接欧几里得和光锥相关性:从正运动学中的风味非单线态到非正运动学中的风味单线态
我们提出了将欧几里得相关和光锥相关连接起来的摄动分解的统一框架。从非局域夸克和胶子双线性相关子出发,推导出单重态和非单重态组合、非正运动学和正运动学、坐标空间和动量空间的硬匹配核。通过选择合适的运动学,得到了广义分布函数(gpd)、局部分布函数(PDFs)和分布幅值(DAs)。重整化和匹配是在最先进的方案中完成的。我们还澄清了文献中关于gpd的微扰匹配提出的一些问题。我们的研究结果提供了一个完整的手册,用于在最先进的策略中从欧几里得相关性的晶格模拟中提取所有前导扭转gpd, pdf和da,无论是在坐标还是在动量空间分解方法中。
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来源期刊
Journal of High Energy Physics
Journal of High Energy Physics PHYSICS, PARTICLES & FIELDS-
CiteScore
10.00
自引率
46.30%
发文量
2107
审稿时长
12 weeks
期刊介绍: The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).
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