Description of the Processes and within the Extended NJL Model


Volkov M.K. Pivovarov A.A. Nurlan K.
August 2025Pleiades Publishing

Physics of Particles and Nuclei Letters
2025#22Issue 4855 - 864 pp.

Abstract: In the framework of the extended Nambu–Jona-Lasinio model, the processes and are described taking into account both ground and first radially excited intermediate meson states. It is shown that channels with radially excited 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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Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Moscow oblast, Dubna, 141980, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan

Bogoliubov Laboratory of Theoretical Physics
Institute of Nuclear Physics

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