Analysis of the $$\psi (4040)$$ and $$\psi (4160)$$ decay into $$D^{()} {{\bar{D}}}^{()}$$, $$D_s^{()}{{\bar{D}}}_s^{()}

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2020-03, Vol.80 (3), Article 222
• Main Authors: Bayar, M., Ikeno, N., Oset, E.
• Format: Article
• Language: English
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-020-7785-1

We have performed an analysis of the $$e^+ e^- \rightarrow D^{(*)} {{\bar{D}}}^{(*)}$$ e + e - → D ( ∗ ) D ¯ ( ∗ ) data in the region of the $$\psi (4040)$$ ψ ( 4040 ) and $$\psi (4160)$$ ψ ( 4160 ) resonances which have a substantial overlap and require special care. By using the $$^3 P_0$$ 3 P 0 model to relate the different $$D^{(*)} {{\bar{D}}}^{(*)}$$ D ( ∗ ) D ¯ ( ∗ ) production modes, we make predictions for production of these channels and compare with experiment and other theoretical approaches. As a side effect we find that these resonances qualify largely as $$c {{\bar{c}}}$$ c c ¯ states and the weight of the meson–meson components in the wave function is very small.