Focus Point Assisted by Right-Handed Neutrinos

TL;DR

This paper explores how introducing right-handed neutrinos in the focus point supersymmetry scenario can naturally achieve electroweak symmetry breaking with reduced fine-tuning, consistent with collider and dark matter constraints.

Contribution

It demonstrates that right-handed neutrinos expand the focus point parameter space, allowing for milder fine-tuning and consistent predictions for Higgs mass and superpartner bounds.

Findings

Mild tuning of 3-5% is achievable with right-handed neutrinos.

The Higgs mass prediction aligns with experimental data.

Bounds on squark and gluino masses are consistent with collider limits.

Abstract

The large hadron collider experiments have now reached the focus point region in which the scalar masses are multi-TeV. We study the parameter region of the focus point scenario which may realize a natural electroweak symmetry breaking avoiding serious fine tuning. We show that the region with a mild tuning of 3-5 % level is expanded by introducing right-handed neutrinos in the framework of the seesaw scenario. We discuss the prediction of the Higgs mass, bounds on the squark and gluino masses, and the relic density of the lightest neutralino in such a parameter region.