Single top quark production via SUSY-QCD FCNC couplings at the CERN LHC in the unconstrained MSSM

We evaluate the t (c) over bar and t (u) over bar productions at the LHC within the general unconstrained MSSM framework. We find that these single top quark productions induced by SUSY-QCD FCNC couplings have remarkable cross sections for favorable parameter values allowed by current low energy data, which can be as large as a few pb. Once large rates of the t (c) over bar and t (u) over bar productions are detected at the LHC, they may be induced by SUSY FCNC couplings. We show that the precise measurement of single top quark production cross sections at the LHC is a powerful probe for the details of the SUSY FCNC couplings. (C) 2004 Elsevier B.V. All rights reserved.