New scaling, z scaling, in the inclusive particle production in pA collisio
ns is studied. The concept of z scaling is based on fundamental principles
such as self-similarity, locality, scale relativity, and fractality reflect
ing the general features of particle interactions. The scaling function H-A
(z) is expressed via the invariant cross section Ed(3)sigma/dq(3) and the a
verage multiplicity density dN/d eta of particles produced at pseudorapidit
y eta=0 in the corresponding nucleon-nucleon interaction. The dependence of
H-A(z) on scaling variable z, the center-of-mass energy root s and the ato
mic number A is investigated. It is shown that the available experimental d
ata on cross sections in pA collisions confirm the scaling properties of th
e function H-A(z). The obtained results can be of interest for future exper
iments at BNL relativistic heavy-ion collider and CERN large hadron collide
r in searching for new physical phenomena in pp, pA, and AA collisions. [S0
556-2813(99)02304-3].