https://doi.org/10.1051/epjconf/202430301005
Recent measurements of charmonium decays at BESIII
School of Physics, Peking University, Beijing 100871, People’s Republic of China
* e-mail: dingxx@stu.pku.edu.cn
Published online: 25 September 2024
In this poster, we present the first measurement of the charmonium decay ψ (3686) → ϕ KS0KS0, based on an analysis of a data set comprising (448.1 ± 2.9) × 106 ψ(3686) events collected by the BESIII detector operating at the BEPCII collider. Taking the interference between ψ(3686) decay and continuum production into account, clear signals of ψ (3686) → ϕ KS0KS0 is observed and the branching fraction of ψ (3686) → ϕ KS0KS0 is reported for the first time. Combined with the world average value for B (J / ψ → ϕ KS0KS0, the 12% rule for this channel is tested with high precision.
© The Authors, published by EDP Sciences, 2024
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