Author/Authors :
Y. Yan، نويسنده , , P. Suebka، نويسنده , , C. Kobdaj، نويسنده , , K. Khosonthongkee، نويسنده ,
Abstract :
Pionium is investigated in various pion-pion strong interactions which reproduce well the pion-pion scattering data. It is found that the ground-state pionium wave functions in those realistic pion-pion strong interactions are considerably different from the hydrogen-like one at small distance. One may suggest that some pion-pion interactions may need to be largely improved before applied to the pion-pion atomic system.
