AZIMUTHAL ASYMMETRIES OF PARTICLES EMITTED IN RELATIVISTIC HEAVY-ION COLLISIONS

Experimental particle yield ratios from 14.6A-GeV/c Si-28 interactions with nuclei at intermediate impact parameters are correlated with the orientation of the transverse momentum of projectile fragments. The pi+/-/p ratio increases and the (d + t)/p ratio decreases when fragments are deflected toward the observing spectrometer. Asymmetries are confined to the target rapidity region. Assuming a spectator participant model, these results suggest the presence of significant rescattering of particles with dependences on the collision geometry.