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arXiv · 1810.12702

A study of the vector meson $\mathbf{\psi(4040)}$

Milena Piotrowska·Francesco Giacosa
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Abstract

We investigate the well-known $c\bar{c}$ vector state $\psi(4040)$ in the framework of a quantum field theoretical model. In particular, we study its spectral function and search for the pole(s) in the complex plane. Quite interestingly, the spectral function has a non-standard shape and two poles are present. The role of the meson-meson quantum loops (in particular $DD^*$ ones) is crucial and could also explain the not yet confirmed state $Y(4008)$.

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Milena Piotrowska, Francesco Giacosa. 2018-10-30. A study of the vector meson $\mathbf{\psi(4040)}$. https://doi.org/10.1051/epjconf%2F201919904013

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