English

Starobinsky-like inflation and soft-SUSY breaking

High Energy Physics - Phenomenology 2019-06-14 v2

Abstract

We study a version of Starobinsky-like inflation in no-scale supergravity (SUGRA) where a Polonyi term in the hidden sector breaks supersymmetry (SUSY) after inflation, providing a link between the gravitino mass and inflation. We extend the theory to the visible sector and calculate the soft-SUSY breaking parameters depending on the modular weights in the superpotential and choice of K\"ahler potential. We are led to either no-scale SUGRA or pure gravity mediated SUSY breaking patterns, but with inflationary constraints on the Polonyi term setting a strict upper bound on the gravitino mass m3/2<103m_{3/2} < 10^3 TeV. Since gaugino masses are significantly lighter than m3/2m_{3/2}, this suggests that SUSY may be discovered at the LHC or FCC.

Keywords

Cite

@article{arxiv.1903.08448,
  title  = {Starobinsky-like inflation and soft-SUSY breaking},
  author = {Stephen F. King and Elena Perdomo},
  journal= {arXiv preprint arXiv:1903.08448},
  year   = {2019}
}
R2 v1 2026-06-23T08:13:48.830Z