核子的 GPD 和引力形式因子（夸克和胶子的贡献）

IF 0.3 4区物理与天体物理 Q4 PHYSICS, NUCLEAR Physics of Atomic Nuclei Pub Date : 2024-09-02 DOI:10.1134/S1063778824700492

O. V. Selyugin, O. V. Teryaev

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引用次数: 0

摘要

摘要考虑到最近的粒子分布函数（PDFs）参数化，得到了核子广义粒子分布（GPDs）在极限（\xi\to 0\）下的动量转移依赖性。计算了核子的引力夸克和胶子形式因子。结果表明，核子的胶子引力半径与质子的电磁半径相当。研究了形式因子的功率依赖性。结果表明，夸克引力形式因子由偶极子形式再现，而胶子引力形式因子的形式则对应于三重形式。

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GPDs and Gravitational Form Factors of Nucleons (Quark and Gluon Contributions)

Taking into account the recent parameterizations of parton distribution functions (PDFs), the momentum transfer dependence of generalized parton distributions (GPDs) of nucleons is obtained in the limit \(\xi\to 0\). The gravitational quark and gluon form factors of nucleons are calculated. It is shown that the gluon gravitational radius of the nucleon is comparable to the electromagnetic radius of the proton. The power dependence of form factors is investigated. As a result, it was obtained that the quark gravitational form factor is reproduced by the dipole form, while the form of the gluon gravitation form factor corresponds to the triple form.

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来源期刊

Physics of Atomic Nuclei 物理-物理：核物理

CiteScore

0.60

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.