  We consider the effective field theory generated by a heavy mediator that
connects Standard Model particles to a Dark Sector, considering explicitly the
flavor structure of the operators. In particular, we study the model
independent running and mixing between operators, as well as their matching at
the electroweak scale. In addition to the explicit expression of the
Renormalization Group Equations, we show the numerical solutions as well as
some approximate analytical expressions that help understanding these
solutions. At low energy, our results are particularly important in the case of
light dark sectors communicating to the b quark, and can be immediately applied
to flavored Dark Matter.
