Long-Range Correlations and the Dynamics of Multiparticle Production

It is shown that the negative transverse-angle correlation between leading particles in multiparticle production, required by momentum and energy conservation, is substantially reduced if the secondaries are correlated in longitudinal momentum with the leading particles. The multiperipheral model, which has the pions produced with ordered longitudinal momenta, and a pionization model, which has each pion produced randomly in longitudinal phase space, are compared with experimental results for $\mathrm{pp}\to \mathrm{pp}{\pi }^{+}{\pi }^{+}{\pi }^{-}{\pi }^{-}$ at 23 $\frac{\mathrm{GeV}}{c}$. The data strongly favor random pion production.