Anomalous Wtb couplings in γp collision at the LHC

We study the possibility for the process pp -> p gamma p -> pW(-) t(W+(t) over bar )X with anomalous Wtb couplings in a model-independent effective Lagrangian approach at the LHC. We find 95% confidence level bounds on the anomalous coupling parameters for various values of the integrated luminosity. The improved constraints on the anomalous Wtb couplings have been obtained compared to current limits.