Testing the Higgs model with triplet fields at the ILC

TL;DR

This paper explores the potential to measure the charged Higgs boson and weak gauge boson vertex at the ILC, which could reveal the presence and properties of Higgs triplet fields in various new physics models.

Contribution

It analyzes the feasibility of measuring the $H^\u00b0 W^\u00b0 Z$ vertex at the ILC to determine the Higgs triplet field's VEV, providing a new method to probe these models.

Findings

Potential to measure the $H^\u00b0 W^ Z$ vertex at the ILC.

Estimated precision in determining the triplet Higgs VEV.

Implications for models like type-II seesaw and left-right symmetry.

Abstract

Higgs triplet fields are introduced various new physics models such as the type-II seesaw model, the left-right symmetric model and so on. The vertex of a charged Higgs boson and weak gauge bosons, $H^\pm W^\mp Z$, appears at the tree level in these models. The magnitude of this vertex is proportional to the vacuum expectation value (VEV) of Higgs triplet fields. We discuss the possibility of measuring this vertex at the ILC and study how precisely determine the VEV of the triplet field.