A Note on New Sources of Gaugino Masses

TL;DR

This paper explores a novel mechanism for generating gaugino masses in IIB orientifold models via singlet twisted moduli with non-zero F-terms, highlighting potential non-universalities and a brane setup.

Contribution

It introduces a new source of gaugino masses from singlet twisted moduli in IIB models, analyzing their size and non-universality.

Findings

Singlet twisted moduli can generate gaugino masses.

Gaugino masses may exhibit non-universalities.

A brane configuration illustrating the mechanism is proposed.

Abstract

In IIB orientifold models, the singlet twisted moduli appear in the tree-level gauge kinetic function. They might be responsible for generating gaugino masses if they acquire non-vanishing F-terms. We discuss some aspects of this new possibility, such as the size of gaugino masses and their non-universalities. A possible brane setting is presented to illustrate the usefulness of these new sources.