An extended vector meson dominance model with excited rho, omega, and phi states reproduces e+e- to Sigma Sigma-bar and e+e- to Lambda Sigma-zero data, and predicts unmeasured form factor ratios and phases.
Can the three new states around 2.2 GeV assign to $\omega(3D)$
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abstract
Recently, the BESIII Collaboration reported three resonances: $X(2232)$ with $M = 2232 \pm 19 \pm 27$ MeV and $\Gamma = 93 \pm 53 \pm 20$ MeV, $X(2200)$ whose mass $M = 2200 \pm 11 \pm 17$ MeV and width $\Gamma = 74 \pm 20 \pm 24$ MeV as well as $X(2222)$ which has mass of $2222 \pm 7 \pm 2$ MeV and the width of $59 \pm 30 \pm 6$ MeV. The mass spectrum of $\omega$ meson family is studied utilizing the modified Godfrey-Isgur model, and the two-body strong decays of $X(2232)$, $X(2200)$ and $X(2222)$ within two different approaches of the $^3P_0$ model. We find that the newly discovered states $X(2232)$, $X(2200)$ and $X(2222)$ may be the same and are most likely to be the $\omega(3D)$ state. The discovery could be useful in establishing entire $\omega$ mesons.
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The electromagnetic form factors of $\Sigma$ and $\Sigma^0 \to \Lambda$ transition in the timelike region
An extended vector meson dominance model with excited rho, omega, and phi states reproduces e+e- to Sigma Sigma-bar and e+e- to Lambda Sigma-zero data, and predicts unmeasured form factor ratios and phases.