Hyperon Pair Production at BESIII

2025/08/01 by Shang, Zijie, Zhang, Ruoyu, wang, Xiongfei
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2508.00470

Abstract

This poster presents recent experimental findings from the BESIII experiment, including two categories of studies. Firstly, it reports the studies on the hyperon pair production in the processes e⁺e^- → ΛΛ, Σ⁺Σ^-, Σ⁰Σ⁰, Ξ⁰Ξ⁰ and Ξ^-Ξ⁺. The Born cross sections for these processes are measured at center-of-mass energies ranging from 3.5 to 4.9 GeV. For the first time, evidence for the decays ψ(3770)→ΛΛ and Ξ^-Ξ⁺ is found. Secondly, it reports the measurements of the Born cross sections of multi-body decays involving hyperon final states. The evidence of ψ(4160)→ K^-Ξ⁺Λ+c.c. is found. These results offer new perspectives on hyperon production in e⁺e^- annihilation and the decay mechanism of vector charmonium(-like) states, contributing to our understanding of hadron dynamics.

Citations

• Recent Advances in Hadron Production in e⁺e^- Annihilation at BESIII
• Search for the production of deuterons and antideuterons in e⁺e^- annihilation at center-of-mass energies between 4.13 and 4.70 GeV
• The hidden-charm pentaquark and tetraquark states

Related

• Hyperon Physics at BESIII
• Hyperon physics at BESIII
• Hyperon Physics at BESIII
• Study of hyperon-nucleon interactions at BESIII
• Recent results on hyperon pair production and nucleon time-like form factors at BESIII