$Z'$ resonance and associated $Zh$ production at future Higgs boson factory: ILC and CLIC

TL;DR

This paper explores the potential of future high-energy electron-positron colliders like ILC and CLIC to produce and study a hypothetical Z' boson within the B-L model through the Higgs-strahlung process, aiming for precision measurements.

Contribution

It evaluates the total cross section and event rates for Z' and Higgs production, including resonant and non-resonant effects, demonstrating the feasibility of detailed studies at future colliders.

Findings

Expected ZH events can reach 10^6 at future colliders.

High luminosity and energy enable precision measurements of Z' and Higgs.

Resonant and non-resonant effects significantly impact production rates.

Abstract

We study the prospects of the B-L model with an additional $Z'$ boson to be a Higgs boson factory at high-energy and high-luminosity linear electron positron colliders, such as the ILC and CLIC, through the Higgs-strahlung process $e^{+}e^{-}\rightarrow (Z, Z') \to Zh$, including both the resonant and non-resonant effects. We evaluate the total cross section of $Zh$ and we calculate the total number of events for integrated luminosities of 500-2000\hspace{0.8mm}$fb^{-1}$ and center of mass energies between 500 and 3000\hspace{0.8mm}$GeV$. We find that the total number of expected $Zh$ events can reach $10^6$, which is a very optimistic scenario and it would be possible to perform precision measurements for both the $Z'$ and Higgs boson in future high-energy $e^+e^-$ colliders experiments.