$B^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$: three-body final state interactions and $K\pi$ isospin states

J. H. Alvarenga Nogueira, T. Frederico, O. Lourenço

Final state interactions are considered to formulate the $B$ meson decay amplitude for the $K\pi \pi$ channel. The Faddeev decomposition of the Bethe-Salpeter equation is used in order…