Higgs Mixing in the NMSSM and Light Higgsinos

Understand

We explore the effects of Higgs mixing in the general next-to-minimal supersymmetric Standard Model (NMSSM).

• Extended to include a gauge singlet, the Higgs sector can naturally explain the observed Higgs boson mass in TeV scale supersymmetry without invoking large stop mixing.
• This is particularly the case when the singlet scalar is light so that singlet-doublet mixing increases the mass of the SM-like Higgs boson.
• In such a case the Higgs mixing has interesting implications following from the fact that the higgsino mass parameter and the singlet coupling to Higgs bilinear crucially depend on the Higgs boson masses and mixing angles.