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

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.