Search for 0(4360)→ η(2S) through the process e+e- → ηη(2S)
Abstract
Using data samples corresponding to an integrated luminosity of 0.9~fb-1 collected with the BESIII detector operating at the BEPCII storage ring at the center-of-mass energies of 4.84, 4.92, and 4.95~GeV, we search for the exotic charmonium-like state with quantum numbers JPC=0--, 0(4360), in the process e+e-→η0(4360) with 0(4360)→η(2S). No significant signal of the 0(4360) resonance state is observed. Upper limits on σ(e+e-→η0(4360))· B(0(4360)→η(2S)) and σ(e+e-→ηη(2S)) at the 90\% confidence level are determined for each energy point.
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