Description of the decay $\phi \to \gamma \pi \pi$ in the quark NJL model
DOI:
https://doi.org/10.63907/ansa.v2i2.89Keywords:
radiative decay, $\phi$ meson, chiral symmetry, quark-antiquark states, Nambu$-$Jona$-$Lasinio modelAbstract
The decay $\phi \to \gamma \pi \pi$ is described within the $U(3) \times U(3)$ chiral Nambu$-$Jona$-$Lasinio model. It is shown that the inclusion of intermediate scalar mesons $f_0(500)$ and $f_0(980)$ plays an important role. All mesons are considered as quark-antiquark states.
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