The Minimal Quiver Standard Model

TL;DR

This paper presents a minimal quiver gauge theory model derived from string theory that extends the standard model with one extra massive gauge boson, analyzing its theoretical consistency and potential collider signatures.

Contribution

It introduces a minimal string-inspired extension of the standard model with a single new gauge boson, uniquely determined couplings, and explores its phenomenological implications.

Findings

The model adds one massive gauge boson to the standard model.

Couplings of the new gauge boson are fixed by string theory constraints.

Bounds on the new particle's detection at the LHC are discussed.

Abstract

This paper discusses the minimal quiver gauge theory embedding of the standard model that could arise from brane world type string theory constructions. It is based on the low energy effective field theory of D-branes in the perturbative regime. The model differs from the standard model by the addition of one extra massive gauge boson, and contains only one additional parameter to the standard model: the mass of this new particle. The coupling of this new particle to the standard model is uniquely determined by input from the standard model and consistency conditions of perturbative string theory. We also study some aspects of the phenomenology of this model and bounds on its possible observation at the Large Hadron Collider.