b-tagging in DELPHI at LEP

The numbers of events suitable for the determination of the gluon distribution function f ^p _g (x,Q ²) in a proton at the LHC for various intervals of x and Q ² are estimated. The contributions of background events of different sources are studied and estimated in the considered intervals of x and Q ². The PYTHIA event generator was used to produce physical events for this analysis.Received: 17 June 2003, Revised: 8 July 2004, Published online: 24 August 2004N.B. Skachkov: Present address: Joliot-Curie 6, JINR, 141980, Dubna, Moscow region, Russia