Top-Higgs boson production via gluon fusion at LHC in the TC2 model

TL;DR

This paper calculates the top-Higgs production rate via gluon fusion at the LHC within the TC2 model, finding minimal differences from the original top-technicolor model in the 200-400 GeV mass range, with negligible rates beyond 400 GeV.

Contribution

The study extends previous calculations to the TC2 model with a broader mass range, showing similar production rates to the original model and highlighting limited phenomenological differences.

Findings

Production rate similar to top-technicolor model in 200-400 GeV range

Negligible production rate beyond 400 GeV

Change from original to TC2 model has minimal impact

Abstract

In our work: 0903.2612, we calculate the production rate of single top-Higgs boson in the TC2 model which is a modified version of the original top-technicolor model. The similar process was discussed in arXiv:hep-ph/9905347v2. The TC2 model, as we discussed in the introduction part remedies some shortcomings and loophole of the old version. The top-Higgs in the TC2 model is a mixture of the top-Higgs of the toptechnicolor model and that of the ETC model, thus a parameter $\epsilon$ is introduced to denote the mixture. Moreover, we vary the mass range of the top-Higgs within 300 to 800 GeV while in arXiv:hep-ph/9905347v2, the mass range was taken as 200 to 400 GeV. In the work, our numerical results show that the production rate of single top-Higgs in the TC2 model is very close to that in the toptecnicolor model within the mass range of 200 to 400 GeV. This manifests that change from the original toptechnicolor model to the new TC2 version does not much affect the production rate of the top-Higgs even though the two top-Higgs in the two models are different. Beyond the 400 GeV, even the TC2 model predicts a negligible production rate at LHC. Since the phenomenological change is indeed not obvious, there is not much new to report. Even though the two models are somehow different, we believe that the result is not worth publishing. Therefore we decide to withdraw our manuscript.