An Exponentially Small $\mu$--term in String Theory

Abstract

We describe a mechanism that produces an exponentially small $\mu$--term on the world--volumes of D5 branes wrapping a deformed and fibered $A_3$ singularity. The small $\mu$ arises due to brane instanton effects which can be calculated after a geometric transition at one of the nodes of the singularity.

13 pages in phyzzx.tex, typos and other minor corrections; v3 comments added, minor changes

References in corpus (5)

• Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
• Lectures on Supersymmetry Breaking
• Retrofitting O'Raifeartaigh Models with Dynamical Scales
• Geometric Transitions and Dynamical SUSY Breaking
• Modular Invariance, Soft Breaking, $\mu$ and $\tan \beta$ in Superstring Models