Role of the triangle singularity in the isospin breaking process
J/ψ→ΛΛ¯π
and the possible evidence of
Qi Huang,
Zi-Xuan Ma,
Jia-Jun Wu
et al.
Abstract:In this study, the impact of triangle singularity is investigated in the isospin breaking process J/ψ→ΛΛ¯π. The triangle singularity is found to play a significant role in the process, resulting in the creation of a resonancelike structure around 1.4 GeV in the Λπ(Λ¯π) invariant mass spectrum. To amplify the impact of this triangle singularity, the presence of two Σ*(12−) states around 1.4 GeV and 1.6 GeV is essential, yet these states have not been definitively identified in the current baryon spectrum. We re… Show more
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