In this paper I will discuss the phenomenology of radion of the Randall-Sundrum type models. I will consider the radion couplings and its production and decay, in the same time taking into account the mixing of radion with Higgs.

We derive sum rules for the sparticle masses in different models of supersymmetry breaking. This includes the gravity-mediated models (SUGRA models) as well as models in which supersymmetry breaking terms are induced by super-Weyl anomaly (AMSB models). These sum rules can help in distinguishing between these models. In particular, we obtain an upper bound on the mass of the lightest neutralino as a function of the gluino mass in SUGRA and AMSB models.