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

Author(s): Schael S., Barate R., Bruneliere R., De Bonis I., Decamp D., Goy C., Jezequel S., Lees J P., Martin F., Merle E., Minard M N., Pietrzyk B., Trocme B., Badaud F., Dessagne S., Falvard Alain, Fayolle D., Gay P., Jousset J., Michel B., Monteil S., Pallin D., Pascolo J M., Perret P., Blondel A., Brient J C., Machefert F., Rouge A., Videau H., Jacholkowska Agnieszka

(Article) Published: Physics Letters B, vol. 611 p.66-80 (2005)
Links openAccess full text : openaccess


Ref HAL: in2p3-00021836_v1
DOI: 10.1016/j.physletb.2004.11.048
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Abstract:

Two-Particle correlations in pp, pbarpbar and K0sK0s pairs have been studied in hadronic Z decays recorded at LEP with the ALEPH detector. The correlations were measured as a function of the four-momentum difference Q of the pair. For pp, pbarpbar pairs a depletion of events is observed in the region Q < 3 GeV, and for K0sK0s pairs an 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.