Cosmological Constants as Messenger between Branes

TL;DR

This paper proposes a brane-world model linking cosmological constants to supersymmetry breaking, resulting in a natural explanation for electroweak scale masses while suppressing flavor-changing neutral currents.

Contribution

It introduces a novel scenario connecting hidden and observable sector breakings via the cosmological constant condition in a brane-world context.

Findings

Achieves electroweak scale gravitino and Higgs masses

Suppresses flavor-changing neutral currents

Provides a consistent supersymmetry-breaking framework

Abstract

We present a supersymmetry-breaking scenario in which both the breaking in the hidden sector with no-scale type supergravity and that in the observable sector with gauge mediation are taken into account. The breaking scales in the hidden and observable sectors are related through the vanishing condition of the cosmological constant with a brane-world picture in mind. Suppressing flavor-changing neutral currents, we can naturally obtain the gravitino, Higgs(ino), and soft masses of the electroweak scale.