Heavy-heavy-light quark potential in two approaches
  We perform the first study about the heavy-heavy-light quark potential in lattice QCD and a potential model. We find that the inter-two-quark confining force is reduced by valence quark motional effects compared to the string tension. 
Arata Yamamoto, Hideo Suganuma (Kyoto U.), Hideaki Iida (Kyoto U.,   Yukawa Inst., Kyoto)