Mechanisms of the isospin-breaking decay $f_1(1285)\to f_0(980){\pi }^0\to {\pi }^{+}{\pi }^{-}{\pi }^0$

N. N. Achasov, A. A. Kozhevnikov, G. N. Shestakov

Estimated are the contributions of the following mechanisms responsible for the decay $f_1(1285)\to f_0(980){\pi }^0\to {\pi }^{+}{\pi }^{-}{\pi }^0$: 1) the contribution of the $a_0^0(980)-f_0(980)$ mixin…