Fluctuations in the Mixed Event Technique

A method for an evaluation of fluctuations in the mixed event technique is proposed. It is shown, that, generally, the magnitude of the fluctuations is proportional to $N^{3\mathrm{/}4}$, where $N$ is the number of produced events, which should be compared with $N^{1\mathrm{/}2}$ for the case of independent events. The formula eligible for the use in an analysis of experimental data is provided.