Composite Higgsino
  Several supersymmetric models in which there is a (partially) composite Higgs
boson arising from (coupled to) a strong sector have been proposed. Such strong
dynamics would help to cause the electroweak symmetry breaking naturally. In
this paper, we focus on the compositeness of the Higgsinos in such models. We
show that such a Higgsino compositeness can induce the characteristic decay
branching fraction of the neutralinos. In such scenarios, the decay branching
fraction of the second lightest neutral Higgsino into the lightest neutral
Higgsino with photon can be large due to a dipole interaction. We also discuss
the Higgsino dark matter feature. The annihilation cross section into gamma Z
can be large.
