Mi. Adamovich et al., ON THE JET-LIKE AND RING-LIKE SUBSTRUCTURE IN DISTRIBUTIONS OF PRODUCED PARTICLES IN CENTRAL HEAVY-ION COLLISIONS AT ULTRA-RELATIVISTIC ENERGIES, Journal of physics. G, Nuclear and particle physics, 19(12), 1993, pp. 2035-2043
The azimuthal substructure of particles produced in ultra-relativistic
heavy-ion collisions is investigated. The observed substructure seems
to be of stochastic nature and the features of the experimental data
can be understood when effects like gamma-conversion and particle inte
rference (HBT) are taken into account.