Two-particle correlations in pp, $\overline{p}\overline{p}$ and $K^{0}_{s}K^{0}_{s}$ pairs from hadronic Z decays

Two-Particle correlations in pp, pbarpbar and K0sK0s pairshave been studied in hadronic Z decays recorded at LEP with the ALEPHdetector. The correlations were measured as a function of the four-momentumdifference Q of the pair. For pp, pbarpbar pairsa depletion of events is observed in the region Q < 3 GeV, and for K0sK0s pairsan enhancement of events is observed in the region Q < 0.5 GeV. These features are consistent with expectations from Fermi-Dirac and Bose-Einstein statistics, respectively.