Description of the processes e⁺e^- → K⁺K^-π⁰ and e⁺e^- → K⁺K^-η within the extended NJL model

2024/04/09 by M. K. Volkov, Volkov, M. K., А. А. Пивоваров +3
Economics, Econometrics and Finance · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions #Stochastic processes and financial applications

paper · pdf · doi:10.48550/arxiv.2404.06329

openalex publication_date 2024/04/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the framework of the U(3) × U(3) extended Nambu-Jona-Lasinio model, the processes e⁺e^- → K⁺K^-π⁰ and e⁺e^- → K⁺K^-η are described taking into account both ground and first radially excited intermediate meson states. It is shown that channels with radially excited ϕ(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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