D. Ghosh et al., A study on azimuthal asymmetry of emission of pions produced in ultra-relativistic nuclear collisions, EUROPH LETT, 56(5), 2001, pp. 639-643
An analysis of data of pions emitted from ultra-relativistic nuclear intera
ctions initiated by O-16-AgBr at 60 GeV/nucleon and S-32-AgBr at 200 GeV/nu
cleon reveals the existence of emission asymmetry in the azimuthal plane wh
ich is found to depend on the number of pions but to be nearly independent
of projectile mass and energy.