Singlet extensions of the MSSM with Z₄^R symmetry

2015/02/25 by Michael Ratz, Ratz, Michael, Patrick K. S. Vaudrevange +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #hep-ph

paper · pdf · doi:10.48550/arxiv.1502.07207

9 pages

arxiv created 2015/02/25 · arxiv updated 2015/02/26

Abstract

We discuss singlet extensions of the MSSM with \Z4^R symmetry. We show that holomorphic zeros can avoid a potentially large coefficient of the term linear in the singlet. The emerging model has both an effective mu term and a supersymmetric mass term for the singlet mu_N which are controlled by the gravitino mass. The mu term turns out to be suppressed against mu_N by about one or two orders of magnitude. We argue that this class of models might provide us with a solution to the little hierarchy problem of the MSSM.

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