Three-body final state interaction in $\eta \to 3\pi$ updated

P. Guo, I. V. Danilkin, C. Fernández-Ramírez +2

In view of the recent high-statistic KLOE data for the $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ decay, a new determination of the quark mass double ratio has been done. Our approach relies on a dispersi…