A study of pbar-p -> eta-eta-eta for masses 1960 to 2410 MeV

Authors :: Anisovich, A. V.
Baker, C. A.
Batty, C. J
Bugg, D. V.
Nikonov, V. A.
Sarantsev, A. V. Sarantsev. V. V.
Zou, B. S.
Publication Year :: 2011
Abstract: Data on pbar-p -> 3eta for beam momenta 600--1940 MeV/c are presented. The strongest channel is f_0(1500)-eta from the initial pbar-p state 1S0. Together with eta-pizero-pizero data, the 3eta data determine the branching ratio BR[f_0(1500) -> eta-eta]/BR[f_0(1500) -> pizero-pizero] = 0.42+-0.09. They are consistent with a dominant contribution from an I=0, C=+1 J^{PC} = 0^{-+} resonance observed earlier in the eta-pizero-pizero data; from the combined eta-pizero-pizero and 3eta data, its mass is M = 2320 \pm 15 MeV and its width Gamma = 230+-35 MeV.<br />Comment: One of 10 sets of data fitted to pbar-p in flight -> I=0 C=+1; 11 pages, 6 figures