A Seiberg Dual for the MSSM: Partially Composite W and Z

TL;DR

This paper proposes a supersymmetric duality framework where the electroweak gauge bosons are partially composite, leading to a model that addresses the hierarchy problem and allows for a heavier Higgs mass, resembling extra-dimensional theories.

Contribution

It introduces a novel duality-based model where W and Z bosons are partially composite, integrating supersymmetry with composite gauge bosons and Higgs, providing a new approach to electroweak symmetry breaking.

Findings

The model achieves a Higgs mass up to 400 GeV.

It eliminates the little hierarchy problem.

The framework resembles 4D RS models with bulk gauge fields.

Abstract

We examine the possibility that the SU(2) gauge group of the standard model appears as the dual "magnetic" gauge group of a supersymmetric gauge theory, thus the W and Z (and through mixing, the photon) are composite (or partially composite) gauge bosons. Fully composite gauge bosons are expected to interact strongly at the duality scale, and a large running is needed to match the electroweak gauge couplings. Alternatively one can mix the composite "magnetic" gauge bosons with some elementary ones to obtain realistic models. In the simplest and most compelling example the Higgs and top are composite, the W and Z partially composite and the light fermions elementary. The effective theory is an NMSSM-type model where the singlet is a component of the composite meson. There is no little hierarchy problem and the Higgs mass can be as large as 400 GeV. This "fat Higgs"-like model can be considered as an explicit 4D implementation of RS-type models with gauge fields in the bulk.