Global transverse momentum analysis for Ar+KCl and Ar+BaI2at 1.2 GeV/nucleon

High multiplicity collisions of 1.2 GeV/nucleon ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ar}$ on Kcl and on ${\mathrm{BaI}}_2$ in the Bevalac streamer chamber are studied using the global transverse momentum analysis introduced by Danielewicz and Odyniec. For both systems, there is a sideward flow which is significantly larger than intranuclear cascade model predictions. The current results permit a study of trends in the multiplicity, mass and energy dependence of the observed flow signatures. Estimates of the stiffness of the nuclear equation of state at high density are discussed.