New Minimal Extension of MSSM
C. Panagiotakopoulos, K. Tamvakis
Abstract
We construct a new minimal extension of the Minimal Supersymmetric Standard Model (MSSM) by promoting the μ-parameter to a singlet superfield. The resulting renormalizable superpotential is enforced by a Z5 R-symmetry which is imposed on the non-renormalizable operators as well. The proposed model provides a natural solution to the μ-problem and is free from phenomenological and cosmological problems.
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