Abstract
The minimal U(1)X extension of the Standard Model (SM) is a simple and well-motivated extension of the SM, which supplements the SM with the seesaw mechanism for naturally generating the light neutrino masses and offers various interesting phenomenologies. In the model, the U(1)X charge of each SM field is characterized by the U(1)X charge of the SM Higgs doublet with a free parameter xH. Due to the U(1)X charge of the Higgs doublet, the Higgs boson has a trilinear coupling with the Z boson and the U(1)X gauge boson (Z′). With this coupling, a new process for the associated Higgs boson production with a Z boson arises through a Z′ boson in the s-channel at high energy colliders. In this paper, we calculate the associated Higgs boson production at high energy colliders and show interesting effects of the new Z′ boson mediated process, which can be tested in the future.
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