Example：10.1021/acsami.1c06204 or Chem. Rev., 2007, 107, 2411-2502
Triangle mechanism in the decay processJ/ψ→K−K+a1(1260) Physical Review D (IF5.296), Pub Date : 2021-10-19, DOI: 10.1103/physrevd.104.074016 Xuan Luo, Dazhuang He, Yiling Xie, Hao Sun
The role of the triangle mechanism in the decay process is probed. In this mechanism, a close-up resonance with mass 1823 MeV and width 122 MeV decays into and then fuses into the resonance. We find that this mechanism leads to a triangle singularity around , where the axial-vector meson is considered as a dynamically generated resonance. With the help of the triangle mechanism we find sizable branching ratios and . Such an effect from the triangle mechanism of the decay process could be investigated by such as BESIII, LHCb and Belle-II experiments. This potential investigation can help us obtain the information of the axial-vector meson .