We present the first high-statistics study of the etaeta system over the mass range 1000-3000 MeV/c2. The experiment was performed at the Fermilab Antiproton Accumulator, and the data sample consists of six-photon final states produced in antiproton-proton annihilations at square-root s in the range 2950-3620 MeV. We find evidence for three states with masses 1488 +/- 10 MeV/c2, 1748 +/- 10 MeV/c2 and 2104 +/- 20 MeV/c2 respectively.
Evidence For Eta-eta Resonances In Antiproton Proton Annihilations At 2950 Less-than-root-s-less-than 3620 Mev
MENICHETTI, Ezio;
1993-01-01
Abstract
We present the first high-statistics study of the etaeta system over the mass range 1000-3000 MeV/c2. The experiment was performed at the Fermilab Antiproton Accumulator, and the data sample consists of six-photon final states produced in antiproton-proton annihilations at square-root s in the range 2950-3620 MeV. We find evidence for three states with masses 1488 +/- 10 MeV/c2, 1748 +/- 10 MeV/c2 and 2104 +/- 20 MeV/c2 respectively.
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