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Approximate R-symmetries and the μ term

  • Author(s): Brümmer, F;
  • Kappl, R;
  • Ratz, M;
  • Schmidt-Hoberg, K
  • et al.
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 μ problem. We present various examples in field theory and string-derived models. © SISSA 2010.

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