Study on X(3872) from effective field theory with pion exchange interaction

P. Wang, X. G. Wang

We study $D{\bar{D}}^{\ast }$ ($D^{\ast }\bar{D}$) scattering in the framework of unitarized heavy meson chiral perturbation theory with pion exchange and a contact interaction. ${}^3{S}_1-$${}^3{D}_1$…