; Deng, Wei-Zhen
; Zhu, Shi-Lin] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
; [Liu, Yan-Rui] Inst High Energy Phys, Beijing 100049, Peoples R China
Since Z(+)(4430) lies very close to the threshold of D*(D) over bar (1), we investigate whether Z(+)(4430) could be a loosely bound S-wave state of D*(D) over bar (1) or D*(D) over bar (1)' with J(P)=0(-),1(-),2(-), i.e., a molecular state arising from the one-pion-exchange potential. The potential from the crossed diagram is much larger than that from the diagonal scattering diagram. With various trial wave functions, we notice that the attraction from the one-pion-exchange potential alone is not strong enough to form a bound state with realistic pionic coupling constants deduced from the decay widths of D(1) and D(1)'.