The exotic meson ${\pi }_1(1600)$ with $J^{PC}=1^{-+}$ and its decay into $\rho (770)\pi$

M. G. Alexeev, G. D. Alexeev, A. Amoroso +192

We study the spin-exotic $J^{PC}=1^{-+}$ amplitude in single-diffractive dissociation of 190 GeV$/c$ pions into ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ using a hydrogen target and confirm the $π_1(1600) \to…