Towards the assignment for the $4 ^1S_0$ meson nonet

Details Towards the assignment for the $4 ^1S_0$ meson nonet Towards the assignment for the $4 ^1S_0$ meson nonet

2008-05-22

arxiv.org/abs/0805.3404v2

Phys.Rev.D78:054013,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures, version accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.78.054013

The strong decays of the $\pi(2070)$, $\eta(2010)$, $\eta(2100)$, $\eta(2190)$, and $\eta(2225)$ as the $4 ^1S_0$ quark-antiquark states are investigated in the framework of the $^3P_0$ meson decay model. It is found that the $\pi(2070)$, $\eta(2100)$, and $\eta(2225)$ appear to be the convincing $4 ^1S_0$ $q\bar{q}$ states while the assignment of the $\eta(2010)$ and $\eta(2190)$ as the $4 ^1S_0$ isoscalar states is not favored by their widths. In the presence of the $\pi(2070)$, $\eta(2100)$, and $\eta(2225)$ being the members of the $4 ^1S_0$ meson nonet, the $4 ^1S_0$ kaon is phenomenologically determined to has a mass of about 2153 MeV. The width of this unobserved kaon is expected to be about 197 MeV in the $^3P_0$ decay model.

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