Gauge mediation to effective SUSY through U(1)s with a dynamical SUSY breaking, and string compactification

TL;DR

This paper explores U(1)' mediated supersymmetry breaking, achieving an effective SUSY spectrum with heavy first two family sfermions and lighter third family sfermions and Higgs, using string compactification models.

Contribution

It introduces a novel U(1)' mediation mechanism for effective SUSY, incorporating string compactification to realize the required particle spectrum.

Findings

First two family sfermions above 100 TeV

Third family sfermions and Higgs in TeV range

Particle spectrum compatible with Z(12-I) orbifold compactification

Abstract

We investigate the possibility of U(1)' mediation, leading to an effective SUSY where the first two family sfermions are above 100 TeV but the third family sfermions and the Higgs doublets are in the TeV region(or the light stop case). The U(1)' gaugino, Zprimino, needs not to be at a TeV scale, but needs to be somewhat lighter than the messenger scale. We consider two cases, one the mediation is only through U(1)' and the other through U(1)' and the electroweak hypercharge U(1)_Y. In the SUSY field theory framework, we calculate the superpartner mass spectra for these two cases. We also point out that the particle species needed for these mechanisms are already obtained from a Z(12-I) orbifold compactification.