Abstract
Widely applied to both light and heavy meson decay and standing as one of the most successful strong decay models is the \(^{3}P_{0}\) model, in which \(q\bar{q}\) pair production is the dominant mechanism. In the present, we use the bound-state corrected version of the \(^{3}P_{0}\), called the C\(^{3}P_{0}\) model, to calculate the decay widths of the charmonium \(J^{PC}=1^{--}\) states, nominally \(J/\psi\), \(\psi (2S)\), \(\psi (3770)\), \(\psi (4040)\), \(\psi (4160)\), \(\psi (4415)\) and \(\psi (4660)\) to several common channels.
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Appendix. Parameters
Appendix. Parameters
After the simulation the best \(J/\psi\) fit to the experimental data is achieved with \(\gamma =0.33\), \(\beta _{J/\psi }= 0.182\) GeV, \(\beta _\rho =0.55\) GeV, \(\beta _\pi = 0.55\) GeV, \(\beta _\omega = 0.328\) GeV, \(\beta _{\eta }= 0.348\) GeV, \(\beta _{\eta ^\prime }= 0.170\) GeV, \(\beta _K= 0.4\) GeV, \(\beta _{K^*}=0.315\) GeV, \(\beta _{\phi }=0.340\) GeV, \(\beta _{\phi _\Delta }=0.3\) GeV, \(\beta _{\omega _\Delta }=0.6\) GeV and \(\beta _{J/\psi _\Delta }=0.3\) GeV. These results and the experimental values are shown in the left part of Table 2.
The best \(\psi (2S)\) fit to the experimental data is achieved with \(\gamma =0.33\), \(\beta _{\psi }= 0.042\) GeV, \(\beta _\rho =0.55\) GeV, \(\beta _\pi = 0.55\) GeV, \(\beta _\omega = 0.7\) GeV, \(\beta _{\eta }= 0.7\) GeV, \(\beta _{\eta ^\prime }= 0.8\) GeV, \(\beta _K= 0.47\) GeV, \(\beta _{K^*}=0.8\) GeV, \(\beta _{\phi }=0.7\) GeV, \(\beta _{\phi _\Delta }=0.9\) GeV, \(\beta _{\omega _\Delta }=0.6\) GeV and \(\beta _{\psi _\Delta }=0.042\) GeV. These results and the experimental values are shown in the right part of Table 2.
The best \(\psi (3770)\) is \(\beta _{\psi (3770)} = 0.9\) GeV, \(\gamma =0.33\), \(\beta _\rho =0.105\) GeV, \(\beta _\pi = 0.86\) GeV, \(\beta _\omega = 0.22\) GeV, \(\beta _{\eta }= 0.7\) GeV, \(\beta _{\eta ^\prime }= 0.9\) GeV, \(\beta _K= 0.8\) GeV, \(\beta _{K^*}=0.175\) GeV, \(\beta _{\phi }=0.65\) GeV, \(\beta _{\phi _\Delta }=0.9\) GeV, \(\beta _{\omega _\Delta }=0.6\) GeV and \(\beta _{\psi _\Delta }=0.2\) GeV.
For the D channels a minor modification is observed in the parameters \(\beta _{\psi (3770)} = \beta _{\psi (4040)} = \beta _{\psi (4160)} = \beta _{\psi (4415)} = \beta _{\psi (4660)} = 0.5\) GeV and \(\beta _{D^*}=0.2\) GeV, \(\beta _D=0.6\) GeV, \(\beta _{D^{0\,*}}=\beta _{D^0}= 0.51\) GeV, \(\beta _{D_s} = \beta _{D^*_s} =0.53\) GeV ; \(\beta _{\phi _\Delta }=0.9\) GeV, \(\beta _{\omega _\Delta }=0.6\) GeV and \(\beta _{\psi _\Delta }=0.2\) GeV.
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Hameed, A.A., Hassan, G.S., da Silva, D.T. et al. Charmonium JPC = 1–– Decay in the C3P0 Model. Braz J Phys 53, 27 (2023). https://doi.org/10.1007/s13538-022-01233-1
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DOI: https://doi.org/10.1007/s13538-022-01233-1