Single and double production of the Higgs boson at hadron and lepton colliders in minimal composite Higgs models

TL;DR

This paper investigates how minimal composite Higgs models can be tested through single and double Higgs production at colliders, analyzing deviations from Standard Model predictions and potential to distinguish matter sectors.

Contribution

It provides a comprehensive analysis of Higgs production processes in minimal composite Higgs models and discusses how to differentiate these models from other new physics scenarios.

Findings

Deviations in Higgs production cross sections depend on the compositeness parameter.

Potential to distinguish matter sectors within minimal composite Higgs models.

Differences in double Higgs production cross sections from other new physics models.

Abstract

In the composite Higgs models, originally proposed by Georgi and Kaplan, the Higgs boson is a pseudo Nambu-Goldstone boson (pNGB) of spontaneous breaking of a global symmetry. In the minimal version of such models, global SO(5) symmetry is spontaneously broken to SO(4), and the pNGBs form an isospin doublet field, which corresponds to the Higgs doublet in the Standard Model (SM). Predicted coupling constants of the Higgs boson can in general deviate from the SM predictions, depending on the compositeness parameter. The deviation pattern is determined also by the detail of the matter sector. We comprehensively study how the model can be tested via measuring single and double production processes of the Higgs boson at LHC and future electron-positron colliders. The possibility to distinguish the matter sector among the minimal composite Higgs models is also discussed. In addition, we point out differences in the cross section of double Higgs boson production from the prediction in other new physics models.