Low-energy phenomenology of trinification: an effective left-right-symmetric model

TL;DR

This paper develops a low-energy effective theory for the trinification model, predicting new scalar particles around 100 GeV and potential deviations from Standard Model Higgs behavior, which can be tested at the LHC.

Contribution

It constructs a simplified low-energy effective model of trinification, identifying new scalar states and phenomenological scenarios for experimental testing.

Findings

Predicted scalar particles at ~100 GeV

Possible light fermiophobic scalar and twin Higgs states

Regions with measurable deviations in Higgs couplings

Abstract

The trinification model is an interesting extension of the Standard Model (SM) based on the gauge group $SU(3)_C\times SU(3)_L\times SU(3)_R$. We study its low-energy phenomenology by constructing a low-energy effective field theory, thereby reducing the number of particles and free parameters that need to be studied. The resulting model predicts that several new scalar particles have masses in the $\mathcal{O}\left(100\text{ GeV}\right)$ range. We study a few of the interesting phenomenological scenarios, such as the presence of a light fermiophobic scalar in addition to a SM-like Higgs, or a degenerate (twin) Higgs state at 126 GeV. We point out regions of the parameter space that lead to measurable deviations from SM predictions of the Higgs couplings. Hence the trinification model awaits crucial tests at the Large Hadron Collider in the coming years.