  We study reheating after the end of inflation in models where the inflaton is
the superpartner of goldstino and is charged under a gauged $U(1)$ R-symmetry.
We consider two classes of models -- one is small field characterized by an
almost flat K\"ahler space, and the other large field characterized by a
hyperbolic K\"ahler space $SU(1,1)/U(1)$, while in both cases the inflaton
superpotential is linear due to the R-symmetry. The inflationary observables of
our models fit within 2$\sigma$ CMB values. Upon coupling the inflaton sector
to the (supersymmetric) Standard Model, we compute the MSSM parameters, mass
spectrum, and decay modes of the inflaton, with the resulting reheating
temperature around $10^8$ GeV. We also find that both models can accommodate
superheavy LSP dark matter, depending on the parameter choice.

High Energy Physics - Theory;High Energy Physics - Phenomenology