  We introduce the parameter of bunching for an analysis of the intermittent
structure of multihadron production in high-energy collisions following an
analogy with photon counting in quantum optics. A power-law singularity is
shown to exist for second-order bunching parameters in small phase-space
intervals for the case of a monofractal structure of the multiplicity
distribution and a similar form for the high-order parameters for the case of
multifractality. The approximation of the high-order bunching parameters by the
second-order provides a good description of the anomalous fractal dimensions
for a number of experimental data with multifractal behavior.
