I am trying to figure out the Feynman diagrams for the Hierarchy problem. Here's what I have. (a) is the Higgs self interaction (φ4). It is quadratically divergent with additional logarithmic terms. (b) is the 1 loop Yukawa correction to the Higgs where F might be the top quark and g is the Yukawa coupling constant. It is also quadratically divergent with additional logarithmic terms. (c) shows the Higgsino in the supersymmetric model. (d) shows the sfermion in the supersymmetric model. My question is "Are these diagrams correct and, in the supersymmetric model, what 'cancels' what?" Assuming (c) and (d) are valid diagrams, (c) should 'cancel' (a) and (d) should 'cancel' (b). Is this correct? What about other combinations? The literature seems to indicate that (d) would also 'cancel' (a) but I'm not sure why? Also, what can be said about the coupling constants involved in (c) and (d)? I'm new to this subject so any help would be appreciated. Thanks.