2013/11/06 by BESIII Collaboration
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.1311.1274
Based on the data samples collected at the energies of J/ψ, ψ(3686), ψ(3770) and ψ(4040) resonances with the BESIII detector at the BEPCII storage ring, we present charmonium decays in two aspects. One is the search for baryonic decays of ψ(3770) and ψ(4040), including ΛΛπ+π-, ΛΛπ0, ΛΛη, Σ+ Σ-, Σ0 Σ0, Ξ-Ξ+ and Ξ0Ξ0. None are observed, and upper limits are set at the 90% confidence level. The other is the light hadron spectroscopy from charmonium radiative decays, including the spin-parity analysis of the p p mass-threshold enhancement in J/ψ radiative decays and the ηη system in J/ψ→γηη radiative decays.