Higgs Mass Corrections in the SUSY B-L Model with Inverse Seesaw

TL;DR

This paper calculates one-loop corrections to the Higgs mass in a SUSY B-L model with inverse seesaw, showing potential mass increases up to 200 GeV, which helps reconcile theory with experimental limits and remains testable at the LHC.

Contribution

It provides the first detailed calculation of right-handed (s)neutrino effects on Higgs mass in this specific SUSY B-L model with inverse seesaw, highlighting significant mass corrections.

Findings

Higgs mass corrections can reach up to 100 GeV.

The upper limit on Higgs mass is around 200 GeV.

The model remains testable at the LHC.

Abstract

In the context of the Supersymmetric (SUSY) B-L (Baryon minus Lepton number) model with an inverse seesaw mechanism, we calculate the one-loop radiative corrections due to right-handed (s)neutrinos to the mass of the lightest Higgs boson when the latter is Standard Model (SM)-like. We show that such effects can be as large as O(100) GeV, thereby giving an absolute upper limit on such a mass around 200 GeV. The importance of this result from a phenomenological point of view is twofold. On the one hand, this enhancement greatly reconciles theory and experiment, by alleviating the so-called `little hierarchy problem' of the minimal SUSY realization, whereby the current experimental limit on the SM-like Higgs mass is very near its absolute upper limit predicted theoretically, of 130 GeV. On the other hand, a SM-like Higgs boson with mass below 200 GeV is still well within the reach of the Large Hadron Collider (LHC), so that the SUSY realization discussed here is just as testable as the minimal version.