Pion in the Bethe-Salpeter Approach with Separable Kernel

IF 0.4 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Letters Pub Date : 2025-10-03 DOI:10.1134/S1547477125700943

S. G. Bondarenko, M. K. Slautin

引用次数: 0

Abstract

In the paper, the static and dynamic properties of the pion in the Bethe-Salpeter approach are considered. The rank-one separable kernel of the quark-antiquark interaction is used to solve the equation analytically. Multidimensional integrals describing pion properties are calculated by several numerical methods and compared with previous papers. An error in the calculation of the interaction part of the elastic pion form factor is found. Using the corrected results, the kernel parameters are refitted. The calculated static properties as well as transition and elastic form factors are presented in comparison with the recent experimental data.

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具有可分离核的Bethe-Salpeter方法中的介子

本文考虑了介子在Bethe-Salpeter方法中的静态和动态性质。利用夸克-反夸克相互作用的秩一可分离核对方程进行解析求解。用几种数值方法计算了描述介子性质的多维积分，并与以往文献进行了比较。在计算弹性介子形状因子的相互作用部分时发现了一个错误。利用修正后的结果，对核参数进行了修正。计算得到的静力性能、过渡系数和弹性系数与最近的实验数据进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physics of Particles and Nuclei Letters PHYSICS, PARTICLES & FIELDS-

CiteScore

0.80

自引率

20.00%

发文量

108

期刊介绍： The journal Physics of Particles and Nuclei Letters, brief name Particles and Nuclei Letters, publishes the articles with results of the original theoretical, experimental, scientific-technical, methodological and applied research. Subject matter of articles covers: theoretical physics, elementary particle physics, relativistic nuclear physics, nuclear physics and related problems in other branches of physics, neutron physics, condensed matter physics, physics and engineering at low temperatures, physics and engineering of accelerators, physical experimental instruments and methods, physical computation experiments, applied research in these branches of physics and radiology, ecology and nuclear medicine.