Scalar bosons in Minimal and Ultraminimal Technicolor: Masses, trilinear couplings and widths

TL;DR

This paper calculates the properties of scalar composite bosons in minimal and ultraminimal technicolor models, revealing they are lighter with smaller couplings and decay widths compared to Standard Model Higgs bosons.

Contribution

It provides detailed mass, coupling, and decay width calculations for technicolor scalar bosons using Bethe-Salpeter equations, highlighting differences from fundamental scalars.

Findings

Scalar bosons are lighter than expected.

Trilinear couplings are smaller than Standard Model predictions.

Decay widths into electroweak bosons are significantly reduced in the ultraminimal model.

Abstract

We compute masses, trilinear self-couplings and decay widths into weak bosons of the scalar composite bosons in the case of the Minimal and Ultraminimal technicolor models. The masses, computed via the Bethe-Salpeter equation, turn out to be light and the trilinear couplings smaller than the one that would be expected when compared to a fundamental Standard Model scalar boson with the same mass. The decay widths into electroweak bosons of the Ultraminimal model scalars bosons are much smaller than the one of the Minimal model.