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arXiv · 0801.4640

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

S. W. Ham·E. J. Yoo·S. K. OH·D. Son
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Abstract

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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S. W. Ham, E. J. Yoo, S. K. OH, D. Son. 2008-04-26. Higgs bosons of a supersymmetric $U(1)'$ model at the ILC. https://doi.org/10.1103/physrevd.77.114011

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