Mh in the MSSM-seesaw scenario with ILC precision

TL;DR

This paper analyzes the one-loop radiative corrections from neutrino and sneutrino sectors to the lightest Higgs boson mass in the MSSM-seesaw model, showing significant negative corrections that could impact precision measurements at the ILC.

Contribution

It provides the first detailed calculation of neutrino/sneutrino sector corrections to Mh in the MSSM-seesaw scenario, highlighting their importance for future collider precision tests.

Findings

Corrections to Mh can reach -5 GeV for high Majorana scales.

Corrections are larger than expected ILC measurement precision.

Negative corrections increase with the Majorana scale and neutrino mass.

Abstract

We review the computation of the one-loop radiative corrections from the neutrino/ sneutrino sector to the lightest Higgs boson mass, Mh, within the context of the so-called MSSM-seesaw scenario. This model introduces right handed neutrinos and their supersymmetric partners, the sneutrinos, including Majorana mass terms. We find negative and sizeable corrections to Mh, up to -5 GeV for a large Majorana scale, 10^{13}-10^{15} GeV, and for the lightest neutrino mass in a range 0.1-1 eV. The corrections to Mh are substantially larger than the anticipated ILC precision for large regions of the MSSM-seesaw parameter space.