W±πt∓ associated production at Large Hadron Collider

In this paper we calculate the production of a charged top pion in association with a W boson at the CERN Large Hadron Collider (LHC) in the context of the topcolor assisted technicolor model. We find that the cross section of pp --> bb --> W(+/-)pi(t)(+/-) is roughly corresponding to the result of the process pp --> bb --> W+/- H+/- in the minimal supersymmetric standard model, and for reasonable ranges of the parameters, the cross section can reach a few hundred fb. The W(+/-)pi(t)(+/-) signal should be clearly visible at LHG unless pi(t)(+/-). is very heavy.