Radiative B-L symmetry breaking and the Z' mediated SUSY breaking

TL;DR

This paper proposes a mechanism where radiative B-L symmetry breaking links neutrino masses to Z'-mediated SUSY breaking, resulting in a potentially light gluino and compressed gaugino spectra relevant for LHC searches.

Contribution

It introduces a novel connection between B-L symmetry breaking, neutrino mass scale, and Z'-mediated SUSY breaking, with implications for collider phenomenology.

Findings

B-L symmetry breaking scale is linked to neutrino masses via the see-saw mechanism.

Z'-mediated SUSY breaking occurs around 10^6 GeV, affecting gaugino masses.

Gluino becomes relatively light with compressed gaugino spectra at the weak scale.

Abstract

We explore a mechanism of radiative B-L symmetry breaking in analogous to the radiative electroweak symmetry breaking. The breaking scale of B-L symmetry is related to the neutrino masses through the see-saw mechanism. Once we incorporate the U(1)_{B-L} gauge symmetry in SUSY models, the U(1)_{B-L} gaugino appears, and it can mediate the SUSY breaking (Z-prime mediated SUSY breaking) at around the scale of 10^6 GeV. Then we find a links between the neutrino mass (more precisly the see-saw or B-L scale of order 10^{6} GeV) and the Z-prime mediated SUSY breaking scale. It is also very interesting that the gluino at the weak scale becomes relatively light, and almost compressed mass spectra for the gaugino sector can be realized in this scenario, which is very interesting in scope of the LHC.