Higgs bosons of a supersymmetric $U(1)'$ model at the ILC

Details Higgs bosons of a supersymmetric $U(1)'$ model at the ILC Higgs bosons of a supersymmetric $U(1)'$ model at the ILC

2008-01-30

arxiv.org/abs/0801.4640v2

Phys.Rev.D77:114011,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 2 figures, 1 table, PRD

Scientific paper

10.1103/PhysRevD.77.114011

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.

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