Analysis of Multiplicity Fluctuations in pp Collisions at 400 GeV/c by Bunching Parameters

The multiplicity fluctuations of charged particles produced in pp collisions at 400 GeV/c have been studied by means of the bunching parameters (BPs). The results show that the values of BPs ŋ₂(M) and ŋ₃(M) depend not only on the width of multiplicity distribution, but also on the phase space correlations. The BPs: ŋ₂( M ) and ŋ₃(M) follow the same power-law behavior, which indicates that the multifractal structure in pp collisions at 400 GeV/c is observed.