Particle physics and cosmology with high-scale SUSY breaking in five-dimensional supergravity models

TL;DR

This paper explores a high-scale supersymmetry breaking framework in five-dimensional supergravity, where extra U(1) symmetries influence flavor and Yukawa structures, and moduli-driven inflation explains dark matter abundance.

Contribution

It introduces a novel high-scale SUSY breaking scenario with moduli-induced inflation and non-thermal dark matter production within a five-dimensional supergravity model.

Findings

Dark matter relic abundance is explained by gravitino decay into wino.

Extra U(1) symmetries control flavor structure and Yukawa couplings.

Moduli stabilization and inflation are compatible with observed cosmological parameters.

Abstract

We discuss a high-scale SUSY breaking scenario with the wino dark matter in the five-dimensional supergravity model on $S^1/Z_2$. The extra U(1) symmetries broken by the orbifold projection control the flavor structure of soft SUSY-breaking parameters as well as the Yukawa couplings, and a scalar component of the one of moduli multiplets, which arise from extra-dimensional components of the U(1) vector multiplets, induces the slow-roll inflation. Because of the supersymmetric moduli stabilization as well as the moduli inflation, it is found that the correct dark matter relic abundance is non-thermally generated by the gravitino decaying into the wino.