Generating mu and Bmu in models with Dirac Gauginos

TL;DR

This paper explores a model extension where Dirac gauginos are introduced in the MSSM, using a singlet field to generate mu and Bmu terms via its vacuum expectation value, with R-symmetry breaking from a superpotential cubic term.

Contribution

It proposes a novel mechanism for generating mu and Bmu terms in models with Dirac gauginos using a singlet field and specific R-symmetry breaking assumptions.

Findings

The singlet field can successfully generate mu and Bmu terms.

The model's spectrum is affected by the R-symmetry breaking mechanism.

Implications for phenomenology of Dirac gaugino models are discussed.

Abstract

We consider the extension of the Minimal Supersymmetric Standard Model by Dirac masses for the gauginos. We study the possibility that the same singlet that pairs up with the bino, to form a Dirac fermion, is used to generate mu and Bmu terms through its vacuum expectation value. For this purpose, we assume that, in the Higgs potential, the necessary R-symmetry breaking originates entirely from a superpotential term cubic in the singlet and discuss the implications for the spectrum of the model.