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Inclusive charged and neutral particle multiplicity distributions in $χ_{c J}$ and $J / ψ$ decays
2020
Physical Review D, Particles and fields
Using a sample of 106 million ψð3686Þ decays, ψð3686Þ → γχ cJ ðJ ¼ 0; 1; 2Þ and ψð3686Þ → γχ cJ ; χ cJ → γJ=ψðJ ¼ 1; 2Þ events are utilized to study inclusive χ cJ → anything, χ cJ → hadrons, and J=ψ → anything distributions, including distributions of the number of charged tracks, electromagnetic calorimeter showers, and π 0 s, and to compare them with distributions obtained from the BESIII Monte Carlo simulation. Information from each Monte Carlo simulated decay event is used to construct
doi:10.15120/gsi-2021-00060
fatcat:iasgcffccbac3gsdovfenlvqbm