Majorana neutrino magnetic moments in the gauge-mediated supersymmetry breaking MSSM

Supersymmetric models with broken R parity provide mechanisms that allow to generate Majorana neutrino masses and magnetic moments through virtual particle-sparticle loops. This constitutes an attractive alternative to the seesaw mechanism. In this paper, we present a detailed calculation of the transition magnetic moments of a Majorana neutrino in gauge-mediated supersymmetry breaking minimal supersymmetric standard model (MSSM) without R parity. We base our analysis on the renormalization group evolution of the MSSM parameters, which are unified at the grand unified theory scale.