Associated Higgs boson production with $Z$ boson in the minimal $U(1{)}_X$ extended Standard Model

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 $x_H$. 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 ($Z^{\prime }$). With this coupling, a new process for the associated Higgs boson production with a $Z$ boson arises through a $Z^{\prime }$ 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 $Z^{\prime }$ boson mediated process, which can be tested in the future.

19 Pages, 9 Figures

References in corpus (9)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• $Z^{\prime }$-portal right-handed neutrino dark matter in the minimal U(1)${}_X$ extended Standard Model
• Classically conformal U(1)' extended standard model, electroweak vacuum stability, and LHC Run-2 bounds
• Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV
• The Invisible Z' at the LHC
• Tests of the Standard Model at the International Linear Collider
• Dileptons and four leptons at Z' resonance in the early stage of the LHC