MULTIFRACTALITY AND MULTIFRACTAL PIONIC SPECIFIC HEAT IN NUCLEAR COLLISIONS — TARGET EXCITATION DEPENDENCE.

This paper deals with the target excitation dependence of the multifractal specific heat of pions produced in nucleus-nucleus collisions at 60 and 200 AGeV. Fluctuation pattern of pions is studied in two dimensions considering anisotropy of phase space. The parameter characterizing the anisotropy of phase space, Hurst exponent, is extracted by fitting one-dimensional factorial moment saturation curves. Values of intermittency exponent αq and generalized dimension Dq are determined. The fluctuation pattern reveals multifractal behavior at all target excitations at both energies. The multifractal specific heat c is found to depend on target excitation and the dependence is found to be more pronounced at lower energy. The results are discussed in detail. [ABSTRACT FROM AUTHOR]