125 GeV Higgs as a pseudo-Goldstone boson in supersymmetry with vector-like matters

TL;DR

This paper explores the idea that the 125 GeV Higgs boson could be a pseudo-Goldstone boson within a supersymmetric framework featuring vector-like fermions, providing a novel mechanism for Higgs mass and coupling predictions.

Contribution

It introduces a model where the Higgs is a pseudo-Goldstone boson in supersymmetry with vector-like matter, explaining Higgs mass, couplings, and stability without fine-tuning.

Findings

Higgs mass arises from loops of top quark and vector-like fermions.

Enhanced Higgs to di-photon decay rate from vector-like matter loops.

Stability issues addressed via UV completion with Goldstone boson picture.

Abstract

We propose a possibility of the 125 GeV Higgs being a pseudo-Goldstone boson in supersymmetry with extra vector-like fermions. Higgs mass is obtained from loops of top quark and vector-like fermions from the global symmetry breaking scale f at around TeV. The mu, Bmu/mu \sim f are generated from the dynamics of global symmetry breaking and the Higgs quartic coupling vanishes at f as tan beta \simeq 1. The relation of msoft \sim $4\pi M_Z$ with f \sim mu \sim m_soft \sim TeV is obtained and large mu does not cause a fine tuning for the electroweak symmetry breaking. The Higgs to di-photon rate can be enhanced from the loop of uncolored vector-like matters. The stability problem of Higgs potential with vector-like fermions can be nicely cured by the UV completion with the Goldstone picture.