Nonlocal quark model description of a composite Higgs particle

TL;DR

This paper models the Higgs boson as a top-antitop bound state using a nonlocal quark model, successfully matching experimental masses by tuning interaction parameters.

Contribution

It introduces a nonlocal Nambu-Jona-Lasinio type model that allows a lighter scalar bound state, aligning with observed Higgs and top quark masses.

Findings

Scalar bound state mass can be lighter than constituent sum

Model parameters can be tuned to experimental data

Higgs as top-antitop bound state successfully described

Abstract

We propose a description of the Higgs boson as top-antitop quark bound state within a nonlocal relativistic quark model of Nambu - Jona-Lasinio type. In contrast to model with local four-fermion interaction, the mass of the scalar bound state can be lighter than the sum of its constituents. This is achieved by adjusting the interaction range and the value of the coupling constant to experimental data, for both the top quark mass and the scalar Higgs boson mass, which can simultaneously be described.