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Paper   IPM / P / 15267
School of Physics
  Title:   The resonance Y(4660) as a vector tetraquark and its strong decay channels
  Author(s): 
1.  H. Sundu
2.  S.S. Agaev
3.  K. Azizi
  Status:   Published
  Journal: Phys. Rev. D
  No.:  5
  Vol.:  98
  Year:  2018
  Pages:   054021
  Supported by:  IPM
  Abstract:
The spectroscopic parameters and partial widths of the strong decay channels of the vector meson Y(4660) are calculated by treating it as a bound state of a diquark and antidiquark. The mass and coupling of the JPC=1- tetraquark Y(4660) are evaluated in the context of the two-point sum rules method by taking into account the quark, gluon and mixed condensates up to dimension ten. The widths of the Y(4660) resonance's strong S-wave decays to Jf0(980) and ψ(2S) f0(980), as well as to Jf0(500) and ψ(2S) f0(500) final states are computed. To this end, strong couplings in the relevant vertices are extracted from QCD sum rules on the light-cone supplemented by the technical methods of the soft approximation. The obtained result for the mass of the resonance mY=4677+71−63MeV, and prediction for its total width ΓY = (64.8 ±10.8) MeV are in nice agreements with the experimental information.

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