Электронный каталог

Статья

Volkov, M.K.
Decays *t *> *p*p*h*n&subB(t) and *t *> *p*h*h*n&sub(t) in the Extended Nambu-Jona-Lasinio Model / M.K.Volkov, A.A.Pivovarov, K.Nurlan. – Text : electronic // Natural Science Review. – 2025. – Vol. 2, No. 4. – P. 100403. – URL: https://doi.org/10.54546/NaturalSciRev.100403. – Bibliogr.: 34.

In the framework of the extended Nambu–Jona-Lasinio model, the processes τ → ππη(η′)ντ and τ → πηη(η′)ντ are considered taking into account mesons in the ground and first radially excited intermediate states. It is shown that in the processes τ → ππη(η′)ντ the vector channel is dominant, and in the processes τ → πηη(η′)ντ the main contribution is given by the axial-vector channel. The scalar meson a0 plays a dominant role in processes with two η mesons in the final state. The significance of the relative phase between the ground and first radially excited states for these processes is shown. The obtained results for the τ → ππηντ process are in satisfactory agreement with the recent experimental data from BaBar and CMD-3, which differ from the averaged values given in the PDG tables.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 324.1б - Сильные взаимодействия. Электромагнитная структура частиц. Алгебра токов. Киральные теории. Теория Редже$
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$