Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-02-19
Phys.Rev.D85:074024,2012
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 5 figures. More discussions and numerical results added. Typos corrected
Scientific paper
10.1103/PhysRevD.85.074024
Inspired by the observed Y(2175) state, we predict its non-strange partner Y(1915), which has a resonance structure with mass around 1915 MeV and width about $317\sim 354$ MeV. Experimental search for Y(1915) is proposed by analyzing the $\omega f_0(980)$ or $\omega \pi\pi$ invariant mass spectrum of the $e^+e^-\to \omega f_0(980), \omega \pi\pi$ and $J/\psi\to \eta \omega f_0(980)$ processes, which are accessible at Belle, BaBar, BESIII and forthcoming BelleII. Considering similarity between two families, the comparison of the mass spectra of $\omega$ and $\phi$ families can provide important information on the 1D state of $\phi$ family, $\phi(1910)$, which has a very broad resonance structure with mass around 1910 MeV regarded as the strangeonium partner of $\omega(1650)$. This also answers the question why the 1D state $\phi(1910)$ is still missing in experiment. This is supported by our former study on the properties of Y(2175), which explains Y(2175) as the 2D strangeonium because our theoretical total width is comparable with the Belle data.
Chen Dian-Yong
Liu Xiang
Matsuki Takayuki
Sun Zhi-Feng
Wang Xiao
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