Two-Particle Correlations in InclusiveppInteractions between 13 and28 GeVc

New data are presented on ${\pi }^{-}$ production in inclusive $\mathrm{pp}$ interactions at 13, 18, 21, 24, and $28.5 \frac{\mathrm{GeV}}{c}$. Mean values $〈n〉$, $〈n(n-1\mathrm{})\mathrm{}〉$, and the associated multiplicity $〈n\left(y\right)-1\mathrm{}〉$ are given as functions of $s$. Single- and two-particle spectra are presented. The nova model reproduces our two-pion inclusive distributions very well and thus explains strong correlations found between $\pi$' s as a simple manifestation of small inelasticity, observed previously in single-particle spectra.