Testing The Molecular Nature Of H₁（1380） Resonance In χ_cJ→ΦK*（?） Decay

The interaction between hadrons,the internal structure of hadrons and hadron states are the frontier topics in particle physics.At present,there are few experimental data on h1(1380)and only three experimental groups on PDG.The internal structure of h1(1380)state has been controversial.It may be a conventional meson ss state,a tetraquarks,a meson-meson molecular state,etc.Based on the chiral unitary theory,h1(1380)is generated by vector meson-pseudoscalar meson dynamics.The molecular structure of h1(1380)and its rela-tion with KK are adopted,The coupling constants of φη and other reaction chan-nels were used to investigate the formation mechanism of h1(1380)in the process ofχcJ→Φh1(1380)→ΦK*(?) decay and its molecular state structure effect.The molec-ular state structure characteristics of h1(1380)were examined by comparing with the observed results of BESⅢ experiment.This work reproduces the experimental data of BESⅢ on these decays.The apex angle structure of χcJΦVP is analyzed,and the results show that the h1(1380)state,which is the state generated by the VPS-wave interaction dynamics,cannot be generated dur-ing the decay process of xc0→ΦK*(?),but it can be generated by χc1→ΦK*(?) andχc2→ΦK*(?) decay process;andχc1→ΦK*(?) decay and xc2→ΦK*(?) decay have the same amplitude structure.Theoretically,it is in good agreement with the BESⅢexperimental group.s observations on the decay of χCJ→ΦK*(?)→ΦK+K-π0：There is no h1(1380)signal in the K+K-π0 invariant mass distribution of χc0 de-cay,but clear h1(1380)signal is observed in the K+K-π0 invariant mass spectrum of χc2 and χc1 decay,and the K+K-π0 invariant mass distribution of χc1 decay and χc2 decay has the same spectral line shape,but there is difference in the intensity(or height)of the spectral line;We also explain the valley in 1550-1600 MeV rangeχc1→ΦK*(?)→ΦK+K-π0 decay tree level contribution and circle diagram contri-bution including h1(1380)have coherent cancellation effect,which makes the constant mass distribution of K+K-π0 in 1550-1600 MeV region appear a decreasing valley It and h1(1380)as the fraction generated by dynamics The property of the substate is closely related.The image of h1(1380)with molecular structure is supported.