非局部手性异常与广义部子分布

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-01-14 DOI:10.1103/physrevd.111.014013

Shohini Bhattacharya, Yoshitaka Hatta, Jakob Schoenleber

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引用次数: 0

摘要

我们讨论了沿光锥的QCD手性异常的非局部推广，并推导了由该异常介导的扭转二、扭转三、扭转四广义部分子分布之间的关系。我们进一步建立了与最近在康普顿散射振幅的微扰计算中发现的GPD E中的“异常极”的联系，并证明了它在GPD水平上的抵消。我们的工作有助于阐明以前未探索的GPDs、手性异常和η介子质量生成之间的联系。2025年由美国物理学会出版

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Nonlocal chiral anomaly and generalized parton distributions

We discuss the nonlocal generalization of the QCD chiral anomaly along the light cone and derive relations between twist-two, twist-three, and twist-four generalized parton distributions (GPDs) mediated by the anomaly. We further establish the connection to the “anomaly pole” in the GPD E˜ recently identified in the perturbative calculation of the Compton scattering amplitudes, and demonstrate its cancellation at the GPD level. Our work helps elucidate the previously unexplored connection between GPDs, the chiral anomaly, and the mass generation of the η′ meson.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.