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arXiv · 2008.04023

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

Arindam Das·Nobuchika Okada
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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.

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Arindam Das, Nobuchika Okada. 2020-08-10. Associated Higgs boson production with $Z$ boson in the minimal $U(1)_X$ extended Standard Model. https://doi.org/10.1016/j.nuclphysb.2023.116159

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