Two-Particle Correlations in Inclusive Reactions

Two-particle inclusive distributions and correlation functions are computed from a model which emphasizes single production of resonance-like hadrons (novas) which cascade decay through pion emission. Strong positive correlations are predicted at small values of the center-of-mass rapidity of the final pions. The magnitude and energy dependence of $〈n_{{\pi }^{-}}〉$ and $〈n_{{\pi }^{-}}(n_{{\pi }^{-}}-1)〉$ are reproduced correctly. Good agreement is obtained with experimental $\frac{d\sigma }{\mathrm{dy}}$, $\frac{d^2\sigma }{d{y}_{1}d{y}_2}$, and $C(y_1, y_2)$ from data on ${\pi }^{+}p\to {\pi }^{-}{\pi }^{-}X$ at 18.5 GeV/c.