Author/Authors :
A.V. Anisovich، نويسنده , , C.A. Baker، نويسنده , , C.J. Batty، نويسنده , , D.V. Bugg، نويسنده , , V.A. Nikonov، نويسنده , , A.V. Sarantsev، نويسنده , , V.V. Sarantsev، نويسنده , , B.S. Zou، نويسنده ,
Abstract :
Data on p̄p→ηηη for beam momenta 600–1940 MeV/c are presented. The strongest channel is f0(1500)η from the initial p̄p state 1S0. Together with ηπ0π0 data, the 3η data determine the branching ratio BR[f0(1500)→ηη]/BR[f0(1500)→π0π0]=0.42±0.09. They are consistent with a dominant contribution from an I=0, C=+1 JPC=0−+ resonance observed earlier in the ηπ0π0 data; from the combined ηπ0π0 and ηηη data, its mass M=2320±15 MeV and its width Γ=230±35 MeV.
