Anomalous single production of fourth family up-type quark associated with neutral gauge bosons at the LHC

Abstract

The fourth family quarks are expected to have mass larger than the top quark considering the results from recent studies on the allowed parameter space. They could also have different dynamics than the quarks of three families of the standard model. The single production of the fourth family up-type quark t is studied via the anomalous production process pp → t′VX (where V = g, Z, γ) at the LHC with the center of mass energy of 7 and 14TeV. The signatures of such process are discussed within both the SM and the anomalous decay modes of t quarks. The sensitivity to anomalous coupling κ/Λ = 0.004TeV -1 can be reached at TeV and L int = 100 pb 1. © 2012 IOP Publishing Ltd.