The lightest Higgs boson mass in effective field theory with bulk and brane supersymmetry breaking

TL;DR

This paper investigates how two sources of supersymmetry breaking in an effective Kaluza-Klein framework can lead to a very light Higgs boson, with potential mass corrections depending on the compactification radius.

Contribution

It introduces a model with dual supersymmetry breaking sources and non-diagonal stop mass matrices, showing how these factors can produce a very light Higgs boson.

Findings

The Higgs mass can be significantly affected by the two sources of supersymmetry breaking.

Non-diagonal stop mass matrices allow for a very small eigenvalue, enabling a light Higgs.

Suitable corrections to the Higgs mass depend on the compactification radius.

Abstract

We study the mass of the lightest Higgs boson in an effective Kaluza-Klein theory with two sources of supersymmetry breaking. When stop mass matrices are non-diagonal with respect to Kaluza-Klein modes and each element is not small in unit of the inverse compactification radius, a very small eigenvalue can be accommodated in the diagonalized basis. We show that in the model with the two sources, the Higgs boson mass can receive suitable corrections for various compactification radii.