A possible assignment for the ground scalar meson nonet

Details A possible assignment for the ground scalar meson nonet A possible assignment for the ground scalar meson nonet

2005-07-11

arxiv.org/abs/hep-ph/0507121v1

Eur.Phys.J.A25:263-266,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, to appear in Eur. Phys. J. A

Scientific paper

10.1140/epja/i2005-10091-5

Based on the main assumption that the $a_0(980)$ and $D^\ast_{sJ}(2317)$ belong to the $1 ^3P_0$ $q\bar{q}$ multiplet, in the framework of Regge phenomenology and meson-meson mixing, it is suggested that the $a_0(980)$, $K^\ast_0(1052)$, $f_0(1099)$ and $f_0(530)$ constitute the ground scalar meson nonet, and that the $f_0(1099)$ is composed mostly of $s\bar{s}$ while the $f_0(530)$ is mainly $u\bar{u}+d\bar{d}$. It is supposed that these states would likely correspond to the observed scalar states $a_0(980)$, $\kappa(900)$, $f_0(980)$ and $f_0(600)/\sigma$, respectively. The agreement between the present findings and those given by other different approaches is satisfactory.

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