In this work, we propose the possible assignment of the newly observed 
					, as well as 
					, as a molecular state from the interaction of a baryon 
					 and an antibaryon 
					. With the help of effective Lagrangians, the 
					 interaction is described within the one-boson-exchange model with 
					, 
					, 
					, 
					, and 
					 exchanges considered. After inserting the potential kernel into the quasipotential Bethe-Salpeter equation, the bound states from the 
					 interaction can be studied by searching for the pole of the scattering amplitude. Two loosely bound states with spin parities 
					 and 
					 appear near the threshold with almost the same parameter. The 
					 state can be assigned to 
					 observed at BESIII, which is very close to the 
					 threshold. The scalar meson 
					 can be interpreted as a 
					 state from the 
					 interaction. The annihilation effect is also discussed through a coupled-channel calculation plus a phenomenological optical potential. It provides large widths to two bound states produced from the 
					 interaction. The mass of the 
					 state is slightly larger than the mass of the 
					 state after including the annihilation effect, which is consistent with our assignment of these two states as 
					 and 
					, respectively. The results suggest that further investigation is required to understand the structures near the 
					 threshold, such as 
					, 
					, and 
					.
				

China

Jun-Tao Zhu

Yi Liu

Dian-Yong Chen

Longyu Jiang

Jun He

X(2239) and 
					 as hidden-strange molecular states from 
					 interaction Supported by the National Natural Science Foundation of China (11675228, 11775050, 61871124), the Fundamental Research Funds for the Central Universities, the national defense Pre-Research foundation of China, by State Key Laboratory of Acoustics, Chinese Academy of Sciences (SKLA201604), Science and Technology on Sonar Laboratory, the Stable Supporting Fund of Acoustic Science and Technology Laboratory