EPJ Web Conf.
Volume 199, 2019MESON 2018 – 15th International Workshop on Meson Physics
|Number of page(s)||3|
|Published online||01 February 2019|
A study of the vector meson ψ(4040)
1 Institute of Physics, Jan Kochanowski University, ul. Swietokrzyska 15, 25-406, Kielce, Poland.
2 Institute for Theoretical Physics J. W. Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany.
a e-mail: firstname.lastname@example.org
Published online: 1 February 2019
We investigate the well-known vector state ψ(4040) in the frame-work 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 conformed “state” Y(4008).
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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