  The identity of the quark-squark-gluino Yukawa coupling with the
corresponding quark-quark-gluon QCD coupling in supersymmetric theories can be
examined experimentally at the Large Hadron Collider (LHC). Extending earlier
investigations of like-sign di-lepton final states, we include jets in the
analysis of the minimal supersymmetric standard model, adding squark-gluino and
gluino-pair production to squark-pair production. Moreover we expand the method
towards model-independent analyses which cover more general scenarios. In all
cases, squark decays to light charginos and neutralinos persist to play a
dominant role.
