Common origin of the shoulder structure and of the oscillations of   moments in multiplicity distributions in e(+)e(-) annihilations
  We show, via a simple parametrization of the multiplicity distribution of charged particles in e(+)e(-) annihilation at the Z0 peak in terms of the weighted superposition of two negative binomial distributions, that both the shoulder structure in the intermediate multiplicity range and the oscillation in sign of the ratio of factorial cumulants over factorial moments of increasing order are related to hard gluon radiation. 
Alberto Giovannini (Torino Univ. & INFN, Torino), Sergio Lupia   (Munich, Max Planck Inst.) and Roberto Ugoccioni (Lund Univ.)