Understanding K/π ratio distribution in the mixed events
C. B. Yang, X. Cai, Z. M. Zhou
Abstract
The event mixing method is analyzed for the study of the event-by-event K/π ratio distribution. It is shown that there exists some correlation between the kaon and pion multiplicities in the mixed events. The K/π ratio distributions in the mixed events for different sets of real events are shown. The dependence of the distributions on the mean K/π ratio, mean and variance of multiplicity distribution in the real events is investigated systematically. The effect of imperfect particle identification on the K/π ratio distribution in the mixed event is also considered.
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