Gauge bosons and fermions in SU(3)C x SU(4)L x U(1)X model with SU(2)H xU(1)AH symmetry

TL;DR

This paper explores an extended Standard Model with a novel gauge symmetry structure, analyzing neutral gauge bosons and fermions, their interactions, masses, mixing, and electroweak constraints, without introducing exotic charges.

Contribution

It introduces a new symmetry-breaking pattern in a 3-4-1 model, extending the electroweak sector and analyzing its phenomenological implications.

Findings

Identification of neutral gauge bosons Z', Z'' and their interactions.

Calculation of fermion spectra consistent with anomaly cancellation.

Electroweak constraints derived from oblique corrections.

Abstract

We present a phenomenological study of neutral gauge bosons and fermions in an extended Standard model with SU(3)C x SU(4)L x U(1)X gauge symmetry.The model includes gauge bosons and fermions without exotic charges and is distinguished by the symmetry-breaking patern SU(4)L->SU(2)L x SU(2)H x U(1)AH. This introduces an extended electroweak symmetry group SU(2)L x SU(2)H at low energies.We recover the fermion spectra of an anomaly-free three-family 3-4-1 modelwithout exotic chargesfor U(1)X charge X = T3R+(B-L)/2.The interaction of physical neutral gauge bosons Zprime,Z double prime and exotic fermions are presented along with their masses and mixing angle.The electroweak constraints from oblique corections on the model are also calculated.