# Analysis of $\gamma\gamma\to ZH$ within the CSM concept

## TL;DR

This paper investigates how Higgs and top quark compositeness within the CSM framework affect the amplitudes and cross sections of gamma-gamma to ZH processes, emphasizing the role of photon polarization in distinguishing different compositeness scenarios.

## Contribution

It introduces a detailed analysis of polarization effects in gamma-gamma collisions to identify signatures of Higgs and top quark compositeness within the CSM model.

## Key findings

- Polarized photon collisions reveal large differences between CSM conserving and violating scenarios.
- Modifications in amplitudes and cross sections depend on the compositeness nature.
- Photon polarization is crucial for identifying the origin of observable differences.

## Abstract

We study the modifications of the $\gamma\gamma\to ZH$ amplitudes and cross sections generated by Higgs and top quark compositeness in particular within the CSM concept. We insist on the particular interest of polarized photon-photon collisions which should allow to identify the origin of the large observable differences between various, CSM conserving or CSM violating, compositeness possibilities.