Lightest Higgs Boson Mass in Split Supersymmetry with See-saw Mechanism

Abstract

In the minimal supersymmetric standard model extended by including right-handed neutrinos with see-saw mechanism, the neutrino Yukaka couplings can be as large as the top-quark Yukawa couplings and thus the neutrino/sneutrino may cause sizable effects in Higgs boson self-energy loops. Our explicit one-loop calculations show that the neutrino/sneutrino effects may have an opposite sign to top/stop effects and thus lighten the lightest Higgs boson. If the soft-breaking mass of the right-handed neutrino is very large (at the order of Majorana mass scale), such as in the split-SUSY scenario, the effects can lower the lightest Higgs boson mass by a few tens of GeV. So the Higgs mass bound of about 150 GeV in split-SUSY may be lowered significantly if right-handed neutrinos come into play with see-saw mechanism.

minor changes, version in PRD(Rapid Communication)

References in corpus (2)

• Aspects of Split Supersymmetry
• Effects of the neutrino B-term on the Higgs mass parameters and electroweak symmetry breaking

Cited by in corpus (10)

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• Sneutrino DM in the NMSSM with inverse seesaw mechanism
• Dark Matter Constraints on Gaugino/Higgsino Masses in Split Supersymmetry and Their Implications at Colliders
• Supersymmetry for Fermion Masses
• Structure of split supersymmetry and simple models
• Distinguishing split supersymmetry in Higgs signals at the Large Hadron Collider
• Gravitino dark matter from gluino late decay in split supersymmetry
• Threshold corrections to the radiative breaking of electroweak symmetry and neutralino dark matter in supersymmetric seesaw model
• Radiative corrections to $M_h$ from three generations of Majorana neutrinos and sneutrinos