Description of the Processes \({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}{{\pi }^{0}}\) and \({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}\eta \) within the Extended NJL Model

IF 0.4 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI:10.1134/S1547477125700736

M. K. Volkov, A. A. Pivovarov, K. Nurlan

引用次数: 0

Abstract

In the framework of the \(U(3) \times U(3)\) extended Nambu–Jona-Lasinio model, the processes \({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}{{\pi }^{0}}\) and \({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}\eta \) are described taking into account both ground and first radially excited intermediate meson states. It is shown that channels with radially excited \(\phi (1680)\) meson are dominant in both processes. The influence on the results of the appearance of phase factors of radially excited intermediate states, the existence of which is indicated by experimental data, is discussed.

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扩展NJL模型中进程\({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}{{\pi }^{0}}\)和\({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}\eta \)的描述

在\(U(3) \times U(3)\)扩展的Nambu-Jona-Lasinio模型的框架中，考虑到基态和第一径向激发的中间介子态，描述了\({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}{{\pi }^{0}}\)和\({{e}^{ + }}{{e}^{ - }} \to {{K}^{ + }}{{K}^{ - }}\eta \)过程。结果表明，径向激发\(\phi (1680)\)介子的通道在两个过程中都占主导地位。讨论了实验数据表明的径向激发中间态相位因子的存在对结果的影响。

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.