Charged particle identification with the liquid Xenon calorimeter of the CMD-3 detector

This paper describes a procedure of particle identification with the liquid Xenon calorimeter of the CMD-3 detector currently being developed. The procedure uses the boosted decision tree classification method with specific energy losses of charged particles in the liquid Xenon calorimeter as input variables. The efficiency of the procedure is illustrated by an example of the measurement of the cross section of the process e(+) e(-) -> K+ K- in the center-of-mass energy range from 1.8 to 2.0 GeV.