"SingleTop" - an event generator for the single top quark production at the LHC. Part 1

We present the first version of the event generator SingleTop, which is based on the complete tree-level diagram calculations by means of the CompHEP program. A special attention is paid to a proper matching of the 2 to 3 W-gluon fusion contribution to the relevant 2 to 2 process, which includes the b-quark in the initial state. The latter process is simulated by means of the PYTHIA program. The matching of two contributions allows to simulate correctly events in the entire kinematical region avoiding the double counting and the events with negative weights.