Three-body unitary determination of the $f_1(1285)$ and $f_1(1420)$ pole positions

Tao-Ran Hu, Hai-Long Fu, Feng-Kun Guo +2

We study the $I^G(J^{PC})=0^{+}(1^{++})$ $K\bar{K}\ddot{I}€$ system in an infinite-volume three-body unitary framework, focusing on the pole content of the region of the $f_1(1285)$ and $f_1…