Semileptonic decays of spin-1/2 doubly charmed baryons
  We evaluate exclusive semileptonic decays of ground-state spin-1/2 doubly heavy charmed baryons. The decays are driven by a $c\to s,d$ transition at the quark level. Our form factors are consistent with Heavy Quark Symmetry constraints. The latter are valid in the limit of infinitely heavy quark mass at zero recoil. 
C. Albertus, E. Hernandez, J. Nieves
hep-ph hep-ex nucl-th