Superheavy SUSY-kind Dark Matter and High Energy Cosmic Rays

The search for supersymmetric partners at Large Hadron Collider revealednegative result. Though, strictly speaking, it does not exclude low energysupersymmetry, but still it leads to strong constraints of the parameter space.Therefore the search for supersymmetric particles at higher energies becomes ofinterest. It is shown that in R^2-modified cosmology heavy particles with theinteraction strength typical for supersymmetry could be promising candidatesfor carriers of dark matter. We consider the heating of the Universe at thepost-inflationary stage via particle production by oscillating curvature scalar(scalaron). The bounds on the masses of dark matter particles are obtained fordifferent dominant decay modes of the scalaron. Possible impact of superheavyparticle decays on the spectrum of ultra high energy cosmic rays is discussed.