Invariant mass dependence of particle correlations in π+p and K+p interactions at 250 GeV/c

I. V. Ajinenko*, F. Botterweck, M. Charlet, P. V. Chliapnikov, E. A. De Wolf, K. Dziunikowska, A. M F Endler, Z. G. Garutchava, G. R. Gulkanyan, J. K. Karamyan, D. Kisielewska, W. Kittel, F. K. Rizatdinova, E. K. Shabalina, L. N. Smirnova, A. Tomaradze, F. Verbeure

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We study two- and three-particle correlations as a function of invariant mass. Using data on π+p and K+p collisions at 250 GeV/c, we compare correlation functions and normalised factorial cumulants for various charge combinations. Strong positive correlations are observed only at small invariant masses. The normalised cumulants for "exotic" [(--), (++)] and "nonexotic" pairs (+-) and triplets decrease in power-like fashion with increasing invariant mass. The mass dependence is not incompatible with the power-law behaviour as expected in a Dual Mueller-Regge framework. Comparison with FRITIOF reveals strong disagreements, which are due to too large production rates of resonances, such as ρ0 and η, and the absence of a Bose-Einstein low-mass enhancement in JETSET.

Original languageEnglish (US)
Pages (from-to)567-577
Number of pages11
JournalZeitschrift für Physik C Particles and Fields
Issue number4
StatePublished - Dec 1994

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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