arXiv:1003.0084·v1·High Energy Physics — Theory
Approximate R-symmetries and the mu term
Felix Brummer🇬🇧 · Rolf Kappl🇩🇪 · Michael Ratz🇩🇪 · Kai Schmidt-Hoberg🇩🇪
Abstract
We discuss the role of approximate U(1)_R symmetries for the understanding of hierarchies in Nature. Such symmetries may explain a suppressed expectation value of the superpotential and provide us with a solution to the MSSM mu problem. We present various examples in field theory and string-derived models.
Comments: 26 pages