Электронный каталог

Статья

Volkov, M.K.
Decays f&sub(1) *> a&sub(0)*p, *po*p*p(*h) and f&sub(1) *> KK*p in the Chiral U(3) x |U(3) Quark NJL Model / M.K.Volkov, A.A.Pivovarov, K.Nurlan. – Text : electronic // Physical Review D. – 2025. – Vol. 112, No. 3. – P. 036019. – URL: https://doi.org/10.1103/gtl6-vwsq. – Bibliogr.: 48.

The branching fractions of the axial vector meson decays f&sub(1) → a&sub(0)π; ππη, f&sub(1) → ρπ; πππ, and f&sub(1) → KKπ are calculated in the standard U(3) × U(3) quark Nambu–Jona-Lasinio model. The intermediate channels with the states a&sub(0)(980)π and f&sub(0)(500)η are taken into account in the decay f&sub(1) → ππη. In the case of the scalar mesons, the qq¯ representation as a chiral symmetric partners of the pseudoscalar mesons is used. It is shown that the decays f&sub(1) → ρπ and f&sub(1) → 3π occur due to the mass difference of the u and d quarks. All the results are obtained without using any additional arbitrary parameters and are in satisfactory agreement with the known experimental data.



ОИЯИ = ОИЯИ (JINR)2025