Cluster models,local compensation of transverse momenta and transverse data

We analyse various data available on transverse momentum properties of high-energy collisions, within the framework of cluster models. The mean transverse momentum square of clusters is estimated to be of the order of 0.3 (GeV/c)². The transverse data at FNAL are found to be unable to discriminate between various production amplitudes. We give predictions at ISR on the transverse momentum transfer fluctuation $\text{D}{}_{\mathrm{?}}{}^2\text{(Δy)}$, which would permit this discrimination.