Strong moduli stabilization and phenomenology

TL;DR

This paper explores the phenomenology of string theory models with strong moduli stabilization, predicting universal scalar masses and suppressed A-terms, with implications for low-energy spectra and dark matter.

Contribution

It provides a detailed analysis of the low-energy phenomenology of models with strong moduli stabilization, especially the KL model with F-term uplifting, highlighting their distinctive mass spectra.

Findings

Scalar masses are equal to the gravitino mass.

A-terms are highly suppressed, mainly gravity mediated.

Higgs masses naturally between 125-130 GeV.

Abstract

We describe the resulting phenomenology of string theory/supergravity models with strong moduli stabilization. The KL model with F-term uplifting, is one such example. Models of this type predict universal scalar masses equal to the gravitino mass. In contrast, A-terms receive highly suppressed gravity mediated contributions. Under certain conditions, the same conclusion is valid for gaugino masses, which like A-terms, are then determined by anomalies. In such models, we are forced to relatively large gravitino masses (30-1000 TeV). We compute the low energy spectrum as a function of m_{3/2}. We see that the Higgs masses naturally takes values between 125-130 GeV. The lower limit is obtained from the requirement of chargino masses greater than 104 GeV, while the upper limit is determined by the relic density of dark matter (wino-like).