Strong moduli stabilization and phenomenology

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).

Figures (7)

• Figure 1: The gaugino and chargino masses and the $\mu$-term as a function of the gravitino mass, $m_{3/2}$. Here we have chosen, $\tan \beta = 25$, $M_{in} = 5 \times 10^{17}$ GeV, $\lambda = 1.35$.
• Figure 2: The Higgs mass as a function of the gravitino mass, $m_{3/2}$. Here we have chosen, several combinations of $\tan \beta$, $M_{in}$, and $\lambda$ as indicated on the figure.
• Figure 3: The Higgs mass as a function of $\tan \beta$. We have chosen, several combinations of $m_{3/2}$, $M_{in}$, and $\lambda$ as indicated on the figure.
• Figure 4: The LSP (neutral wino) relic density, $\Omega_\chi h^2$, as a function of the gravitino mass, $m_{3/2}$. Here we have chosen, several combinations of $\tan \beta$, $M_{in}$, and $\lambda$ as indicated on the figure.
• Figure 5: Direct detection processes for the neutralino-nucleon elastic scattering.