Extra Quarks and Bileptons in BSM Physics in a $331$ Model

TL;DR

This paper discusses a specific 331 model in BSM physics featuring bileptons and exotic quarks, highlighting its unique anomaly cancellation, particle spectrum, and potential LHC signatures.

Contribution

It introduces a particular 331 model with bileptons and exotic quarks, detailing its theoretical structure and experimental signatures for collider searches.

Findings

Model predicts bileptons and exotic quarks in the spectrum.

Bileptons lead to multilepton signatures at the LHC.

Model enforces anomaly cancellation with three generations.

Abstract

We describe some salient features of the $331_F$ (Frampton-Pisano-Pleitez) bilepton model, in which the constraints of anomaly cancelation require the number of generations to be three. In a class of six models, four of which characterised by a $\beta$ parameter describing the embedding of the hypercharge in the $SU(3)_L$ symmetry, a specific choice for $\beta$ allows bileptons in the spectrum, i.e. vectors and scalars of lepton numbers $\pm 2$. At the same time the model allows exotic quarks, with the third quark generation treated asymmetrically respect to the other two. Bileptons generate specific signatures in the form of multilepton final states in Drell-Yan like processes, with and without associated jets, which can be searched for at the LHC.