Higgs bosons of a supersymmetric U(1)' model

The lightest scalar Higgs boson is predicted to be smaller than 162 GeV in the leptophobic η-model, at the one-loop level, for a reasonable region of parameter space. In the NMSSM, the sum of the square of the normalized scalar Higgs coupling coefficients to a pair of Z bosons is unity, whereas the corresponding quantity in the leptophobic η-model is less than unity. Thus, by measuring the scalar Higgs coupling coefficients at the ILC, the leptophobic η-model might be distinguished from the NMSSM.