A preliminary spin-parity analysis on the $\overline{p} p \to \pi^{+} \pi^{-} \eta$ annihilation reaction at rest

A preliminary spin-parity analysis performed on the pp to pi /sup +/ pi /sup -/ eta annihilation reaction at rest is presented. The data were acquired in liquid and NTP hydrogen target densities with the OBELIX detector. The obtained results are in agreement with those existing in literature and support the introduction of new resonances. (16 refs).