Radiative corrections to $M_h$ from three generations of Majorana neutrinos and sneutrinos

TL;DR

This paper calculates the one-loop radiative corrections to the lightest Higgs boson mass in the MSSM extended with three Majorana neutrino generations and their superpartners, analyzing the effects of neutrino parameters.

Contribution

It provides a comprehensive one-loop analysis of Higgs mass corrections from Majorana neutrinos and sneutrinos within the MSSM, including renormalization scheme discussions.

Findings

Neutrino and sneutrino contributions can significantly alter Higgs mass predictions.

The size of corrections depends on neutrino Yukawa couplings and mass parameters.

Different renormalization schemes impact the numerical results.

Abstract

In this work we study the radiative corrections to the mass of the lightest Higgs boson of the MSSM from three generations of Majorana neutrinos and sneutrinos. The spectrum of the MSSM is augmented by three right handed neutrinos and their supersymmetric partners. A seesaw mechanism of type I is used to generate the physical neutrino masses and oscillations that we require to be in agreement with present neutrino data. We present a full one-loop computation of these Higgs mass corrections, and analyze in full detail their numerical size in terms of both the MSSM and the new (s)neutrino parameters. A critical discussion on the different possible renormalization schemes and their implications is included.