One- and two-dimensional analysis of intermittency in ultrarelativistic nucleus-nucleus interactions

Corrected scaled factorial moments are calculated for the multiplicity distributions in one- (pseudorapidity and azimuthal angle) and two-dimensional (the product of pseudorapidity and azimuthal angle) phase spaces. An intermittency power-law growth is observed in the central collisions of ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$ and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ at 200A GeV, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ at 60A GeV, and He at ≊140A GeV, while for ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$ at 14.5A GeV it is observed for inclusive interactions in nuclear emulsion. The effect is much pronounced for higher dimensions. The data for the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ beam at 200A GeV satisfy the condition for two phases occurring together.