Gaugino condensation scale of one family hidden SU(5)', dilaton stabilization and gravitino mass

TL;DR

This paper investigates the dynamical breaking of supersymmetry in a hidden SU(5)' model with one family, estimating key scales like gaugino condensation, dilaton stabilization, and gravitino mass, with implications for high-energy physics.

Contribution

It provides a new estimation method for the gravitino mass and demonstrates the possibility of raising the confining scale above 10^{13} GeV in certain models.

Findings

Gravitino mass can be smaller than naive estimates.

Hidden SU(5)' confining scale can exceed 10^{13} GeV.

Effective Lagrangian approach aids in scale estimation.

Abstract

The hidden SU(5)' with one family, 10 and 5-bar, breaks supersymmetry dynamically. From the effective Lagrangian approach, we estimate the hidden sector gaugino candensation scale, the dilaton stabilization and the resulting gravitino mass. In some models, this gravitino mass can be smaller than the previous naive estimate. Then, it is possible to raise the SU(5)' confining scale above 10^{13} GeV.