M_h in MSSM with Heavy Majorana Neutrinos

TL;DR

This paper reviews one-loop radiative corrections to the lightest Higgs boson mass in the MSSM-seesaw scenario with heavy Majorana neutrinos, highlighting sizable negative corrections at high Majorana scales.

Contribution

It provides the first detailed analysis of neutrino/sneutrino sector corrections to M_h within the MSSM-seesaw framework, including the effects of heavy Majorana neutrinos.

Findings

Corrections to M_h can be large and negative at high Majorana scales.

For certain parameters, corrections exceed LHC precision.

Corrections are significant for neutrino masses 0.1-1 eV and Majorana scales 10^{13}-10^{15} GeV.

Abstract

We review the main results of the one-loop radiative corrections from the neutrino/sneutrino sector to the lightest Higgs boson mass, M_h, within the context of the so-called MSSM-seesaw scenario where right handed neutrinos and their supersymmetric partners are included in order to explain neutrino masses. For simplicity, we have restricted ourselves to the one generation case. We find sizable corrections to M_h, which are negative in the region where the Majorana scale is large (10^{13} - 10^{15} GeV) and the lightest neutrino mass is within a range inspired by data (0.1 - 1 eV). For some regions of the MSSM-seesaw parameter space, the corrections to M_h are substantially larger than the anticipated LHC precision.