The Higgs Mass via Type II Seesaw

TL;DR

This paper demonstrates that a supersymmetric model with a type II seesaw mechanism can naturally produce a 125 GeV Higgs mass at tree level without requiring heavy stops, aligning with GUT-scale perturbativity and collider constraints.

Contribution

It introduces a minimal supersymmetric scenario where the type II seesaw mechanism enables a large Higgs mass at tree level, avoiding the need for heavy superpartners.

Findings

Achieves a 125 GeV Higgs mass at tree level in supersymmetry.

Compatible with perturbativity up to the GUT scale.

Discusses implications for gauge coupling unification and LHC signals.

Abstract

We show that the simplest supersymmetric scenario where a large Higgs mass can be attained at tree-level for any ratio of the Higgs vacuum expectation values corresponds to the case where the neutrino masses are generated through the type II seesaw mechanism. This allows a standard model-like Higgs with mass around 125 GeV without assuming a heavy spectrum for the stops. We show that our results are consistent with the bounds coming from perturbativity up to the grand unified scale, discuss gauge coupling unification and possible signals at the Large Hadron Collider.