Associated production of a neutral top-Higgs with a heavy-quark pair in the \gamma\gamma collisions at ILC

TL;DR

This paper investigates the production of a neutral top-Higgs with heavy quark pairs in gamma-gamma collisions at the ILC, finding cross sections comparable to other models, which could help test the standard model and technicolor theories.

Contribution

It provides the first detailed analysis of tar{t}h_t production in gamma-gamma collisions within the topcolor assisted technicolor model at the ILC.

Findings

Cross section for tar{t}h_t is a few fb at 1000 GeV.

Hundreds to thousands of h_t particles can be produced annually.

Production rates are comparable to standard and supersymmetric models.

Abstract

We have studied the associated production processes of a neutral top-Higgs in the topcolor assisted technicolor model with a pair of heavy quarks in \gamma\gamma collisions at the International Linear Collider (ILC). We find that the cross section for t\bar{t}h_t in \gamma\gamma collisions is at the level of a few fb with the c.m. energy \sqrt{s}=1000 GeV, which is consistent with the results of the cross section of t\bar{t}H in the standard model and the cross section of t\bar{t}h in the minimal supersymmetric standard modeland the little Higgs models. It should be distinct that hundreds of to thousands of h_t per year can be produced at the ILC, this process of \gamma\gamma \to t\bar{t}h_t is really interesting in testing the standard model and searching the signs of technicolor.