Limit on Higgs boson trilinear self-coupling in coupled technicolor models

¹ Universidade Tecnológica Federal do Paraná, UTFPR, DAFIS - Av Monteiro Lobato Km 04, 84016-210, Ponta Grossa, PR, Brazil
² Instituto de Física Teórica, UNESP - Rua Dr. Bento T. Ferraz, 271, Bloco II, 01140-070, São Paulo, SP, Brazil

^(a) adoff.gomes@gmail.com (corresponding author)

Received: 28 April 2021
Accepted: 28 July 2021

Abstract

The trilinear self-coupling of the Higgs boson, in a theory in which this boson is composite, is compared to the experimental bound of this quantity obtained by the CMS experiment. In the case of a model where technicolor (TC) is coupled to QCD, we find that the experimental result already constrains the dynamics of the theory, which is represented by an expression of the technifermion self-energy typical of technicolor coupled models, and function of the dynamically generated technifermion mass and two other parameters that describe the technifermion dynamical mass momentum dependence. The limits imposed on this dynamics allow us to make a simple determination of pseudo-Goldstone boson masses that appear in these theories, indicating that these bosons may be expected to be quite massive.