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Role of a0(1710) in the J/ψ→ρ+ρ−ω and J/ψ→γρ0ω reactions

Wen-Tao Lyu1,2,*, Luis Roca3,†, and Eulogio Oset1,4,‡

  • *Contact author: lvwentao9712@163.com
  • †Contact author: luisroca@um.es
  • ‡Contact author: oset@ific.uv.es

Phys. Rev. D 114, 014047 – Published 22 July, 2026

DOI: https://doi.org/10.1103/51l5-sb9w

Abstract

We investigate the strong decay J/ψ→ρ+ρ−ω and the radiative decay J/ψ→γρ0ω, taking into account the S-wave K*K¯*, ρω and ρϕ final-state interactions, which dynamically generate the scalar meson a0(1710). Our results demonstrate that a clear peak structure emerges around 1.8 GeV in the ρ+ω (ρ−ω) invariant mass distribution of the strong decay, which can be associated with the a0(1710) resonance. Similarly, a distinct peak is predicted in the ρ0ω invariant mass distribution of the radiative decay. Our results indicate that clear signals of a0(1710) production could be observed in future measurements of these processes at BESIII, Belle II, and the planned Super Tau-Charm Facility, thereby helping to determine its mass and width more precisely.

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