Soft and hard processes in QCD
I. M. Dremin
Lebedev Physical Institute RAS, 119991 Moscow, Russia
PACS: 12.38.Bx
Abstract
QCD equations for the generating functions are applied to separate
soft and hard jets in e+e--processes of multiparticle production. The
dependence of average multiplicities and higher moments of multiplicity
distributions of particles created in a "newly born" soft subjets on the
share of energy devoted to them is calculated in fixed coupling gluodynamics.
This dependence is the same as for the total multiplicity up to a constant
factor if soft jets are defined as those carrying out a fixed share of
initial energy at all energies. The constant factor depends on this share in
a non-trivial way. Other definitions are also proposed. The relation
between these quantities for soft and hard processes is discussed.