The method of statistical separation of π- and K-mesons by the procedure of a background subtraction in the maximum-likelihood function during the partial-wave analysis of the K-π-π+ system

The possibility of performing a partial wave analysis of a K-π-π+ system when there is no experimental identification of the secondaries has been shown. The substraction of the background events which correspond to the false hypotheses was applied to the likelihood fuction when the wave analysis has been done. This method was verified by the generated data using the matrix element of the process determined from the experimental data on hydrogen. 9 refs.; 5 figs.; 2 tabs