Higgs bosons of a supersymmetric U (1)′ model at the ILC
نویسندگان
چکیده
We study the scalar Higgs sector of the next-to-minimal supersymmetric standard model with an extra U(1), which has two Higgs doublets and a Higgs singlet, in the light leptophobic Z ′ scenario where the extra neutral gauge boson Z ′ does not couple to charged leptons. In this model, we find that the sum of the squared coupling coefficients of the three neutral scalar Higgs bosons to ZZ, normalized by the corresponding SM coupling coefficient is noticeably smaller than unity, due to the effect of the extra U(1), for a reasonable parameter space of the model, whereas it is unity in the next-to-minimal supersymmetric standard model. Thus, these two models may be distinguished if the coupling coefficients of neutral scalar Higgs bosons to ZZ are measured at the future International Linear Collider by producing them via the Higgs-strahlung, ZZ fusion, and WW fusion processes. ∗Email address: [email protected]
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