Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
Does an exotic 1(-+) hybrid candidate <(rho)over cap> (1405) in the vicinity of a(2) (1320) exist? It is worth to confirm this state in the process J/Psi --> rho eta pi at the BEPC Beijing Electron-Positron Collider)/BES (Beijing Spectrameter). Considering <(rho)over cap> (1405), a(2) (1320) and a(o) (1450) overlap in this mass region, the three-state coupling structure mode is discussed by using the generalized moment analysis method. A series of moments for the mode and a criterion are given for confirming the exotic 1(-+) hybrid.