Article

# Non-strange partner of strangeonium-like state Y(2175)

02/2012; DOI:10.1103/PhysRevD.85.074024
Source: arXiv

ABSTRACT 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.

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3 Dec 2012

### Keywords

$\omega \pi\pi$ invariant mass spectrum

$\phi$ families

$\phi$ family

1D state

BaBar

Experimental search

families

mass spectra

non-strange partner

resonance structure

strangeonium

strangeonium partner

theoretical total width