A Model with New Signatures of Exotic Chiral Fermions Coupling with Scalar Leptoquarks

TL;DR

This paper proposes a new anomaly-free chiral fermion extension of the Standard Model involving scalar leptoquarks, predicting potential signals at the LHC within a specific mass window for exotic fermions.

Contribution

It introduces a novel minimal chiral fermion model coupled with scalar leptoquarks, providing new signatures for exotic fermions at the LHC.

Findings

Allowed mass window for exotic fermions: 240-300 GeV.

Potential LHC signals in specific decay channels.

Model remains consistent with existing constraints.

Abstract

In this paper, the possibility to have new physics is considered at the scale of the electroweak symmetry breaking (EWSB) in a completely new framework. A new non-standard minimal chiral fermion extension of the Standard Model (SM) which renders the complete model free from anomalies is included. The new fermionic matter coupled with scalar leptoquaks (SLQ) developing new signals for exotic fermions that could be evaluated in the Large Hadron Collider (LHC). Analysis based on the cross-section final states shows that the channels $D_{-1/3}\overline{D}_{-1/3}\rightarrow jj+\notin$ and $D_{-1/3}\overline{D}_{-1/3}\rightarrow 2l^{-}2l^{+}+jj$ have an apparent narrow window $M_{D_{-1/3}}\sim 240- 300$ GeV still allowed by direct and indirect constraints and then interesting for analysis to the new run of the LHC.