Double Elementary Goldstone Higgs Boson Production in Future Linear Colliders

TL;DR

This paper investigates the production of double elementary Goldstone Higgs bosons at future linear colliders, highlighting significant deviations from the Standard Model predictions that could be experimentally observed.

Contribution

It provides the first detailed analysis of double EGH boson production cross sections at future colliders, comparing with other new physics models.

Findings

Cross sections can vary by -27% to +163% compared to SM.

Certain deviations are within future collider measurement capabilities.

Comparison with other models shows distinct production signatures.

Abstract

The Elementary Goldstone Higgs (EGH) model is a perturbative extension of the standard model (SM), which identifies the EGH boson as the observed Higgs boson. In this paper, we study pair production of the EGH boson in future linear electron positron colliders. The cross sections in the TeV region can be changed to about $-27\%$, $163\%$ and $-34\%$ for the $e^+e^-\rightarrow Zhh$, $e^+e^-\rightarrow \nu\bar{\nu}hh$, and $e^+e^-\rightarrow t\bar{t}hh$ processes with respect to the SM predictions, respectively. According to the expected measurement precisions, such correction effects might be observed in future linear colliders. In addition, we compare the cross sections of double SM-like Higgs boson production with the predictions in other new physics models.