A Fat Higgs with a Fat Top

TL;DR

The paper addresses the challenge of achieving a heavy SM-like Higgs and a large top Yukawa in SUSY without large UV-tuning. It introduces an $SU(3)_s$ s-confining framework in which the MSSM fields, including the Higgses and the top quark, are composites arising from strong dynamics, so their Yukawas are generated dynamically. A dynamical superpotential from the confining sector yields FH-type electroweak symmetry breaking and a top Yukawa while avoiding finely tuned UV parameters. This approach aims to reduce fine-tuning, potentially alleviate the little hierarchy problem, and implies distinctive implications for high-energy unification and low-energy phenomenology.

Abstract

A new variant of the supersymmetric Fat Higgs model is presented in which the MSSM Higgses as well as the top quark are composite. The underlying theory is an s-confining SU(3) gauge theory with the MSSM gauge groups realized as gauged sub-groups of the chiral flavor symmetries. This motivates the large Yukawas necessary for the large top mass and SM-like Higgs of mass>>M_Z in a natural way as the residual of the strong dynamics responsible for the composites. This removes fine-tuning associated with these couplings present in the original Fat Higgs and New Fat Higgs models, respectively.