Phenomenological Implications of Supersymmetric Family Non-universal U(1)-prime Models

TL;DR

This paper develops anomaly-free supersymmetric U(1)' models with family non-universal charges inspired by E_6, analyzing their symmetry breaking, particle spectrum, and implications for flavor-changing neutral currents, potentially explaining observed deviations from the Standard Model.

Contribution

It introduces a novel class of anomaly-free supersymmetric U(1)' models with family non-universality based on E_6 embeddings, analyzing their phenomenological implications.

Findings

Models include additional Higgs and exotic quarks at TeV scale.

Patterns of flavor-changing neutral currents can explain deviations in b to s transitions.

Specific particle spectra and symmetry breaking mechanisms are detailed.

Abstract

We construct a class of anomaly-free supersymmetric U(1)' models that are characterized by family non-universal U(1)' charges motivated from E_6 embeddings. The family non-universality arises from an interchange of the standard roles of the two SU(5) 5* representations within the 27 of E_6 for the third generation. We analyze U(1)' and electroweak symmetry breaking and present the particle mass spectrum. The models, which include additional Higgs multiplets and exotic quarks at the TeV scale, result in specific patterns of flavor-changing neutral currents in the b to s transitions that can accommodate the presently observed deviations inthis sector from the SM predictions.