Analysis of the $$\psi (4040)$$ ψ(4040) and $$\psi (4160)$$ ψ(4160) decay into $$D^{(*)} {{\bar{D}}}^{(*)}$$ D(∗)D¯(∗) , $$D_s^{(*)}{{\bar{D}}}_s^{(*)}$$ Ds(∗)D¯s(∗)

Autor: M. Bayar, N. Ikeno, E. Oset
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: European Physical Journal C: Particles and Fields, Vol 80, Iss 3, Pp 1-9 (2020)
Druh dokumentu: article
ISSN: 1434-6044
1434-6052
DOI: 10.1140/epjc/s10052-020-7785-1
Popis: Abstract 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 $$^3 P_0$$ 3P0 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 $$c {{\bar{c}}}$$ cc¯ states and the weight of the meson–meson components in the wave function is very small.
Databáze: Directory of Open Access Journals
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