2021/08/30 by Qingping Ji, S. S. Fang, Ji, Qingping +3
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2108.13029
openalex publication_date 2021/08/30 · openalex created_date 2021/09/13 · openalex updated_date 2026/07/28
With the help of the largest data samples of J/ψ and ψ(2S) events ever produced in e+e- annihilations, the three singlet charmonium states, ηc(1S), ηc(2S) and hc(1P), have been extensively studied at the BESIII experiment. In this review, a survey on the most recent results, including a series of precision measurements and observations of their new decay modes, is presented, which indicates the further investigations on their decays are needed to understand their decay mechanisms and have precision tests of the theoretical models. At present, about eight times larger data samples of 10 billion J/ψ events and 3 billion ψ(3686) events were collected with the BESIII detector, and thus the prospects for the study of these three charmonium states is discussed extensively.