Hadronic molecules with both open charm and bottom
  With the one-boson-exchange model, we study the interaction between the S-wave $D^{(*)}/D^{(*)}_s$ meson and S-wave $B^{(*)}/B^{(*)}_s$ meson considering the S-D mixing effect. Our calculation indicates that there may exist the $B_c$-like molecular states. We estimate their masses and list the possible decay modes of these $B_c$-like molecular states, which may be useful to the future experimental search. 
Zhi-Feng Sun, Xiang Liu, Marina Nielsen and Shi-Lin Zhu
hep-ph hep-ex nucl-ex nucl-th