Author/Authors :
A.V. Anisovich، نويسنده , , C.A. Baker، نويسنده , , C.J. Batty، نويسنده , , D.V. Bugg، نويسنده , , C. Hodd، نويسنده , , J. Kisiel، نويسنده , , V.A. Nikonov، نويسنده , , A.V. Sarantsev، نويسنده , , V.V. Sarantsev، نويسنده , , I. Scott، نويسنده , , B.S. Zou، نويسنده ,
Abstract :
Data taken with the Crystal Barrel detector on p̄p→π0η and π0η′ are presented at p̄ momenta from 600 to 1940 MeV/c. A partial wave analysis finds two alternative solutions, one significantly preferred over the other. Both contain resonances of similar masses and widths, but different coupling constants and phases. The favoured solution contains a JPC=0++ resonance at 2025±30 MeV with Γ=330±75 MeV, and three 2++ resonances as follows: (i) at 1990+15−30 MeV with Γ=190±50 MeV (dominantly 3P2), (ii) at 2060±20 MeV with Γ=195±30 MeV (dominantly 3F2), (iii) at 2265±20 MeV with Γ=235+60−35 MeV (dominantly 3F2), There are two 4++ resonances at 2025±40 MeV with Γ=250+80−55 MeV and at 2300±20 MeV with Γ=230±40 MeV. Errors cover systematic errors and statistical fluctuations of 3σ.
