SELF-AFFINE FRACTALITY IN PI(+)P AND K(+)P COLLISIONS AT 250 GEV C/

Taking into account the anisotropy of phase space in multiparticle pro duction, a self-affine analysis of factorial moments was carried out o n the NA22 data for pi(+)p and K(+)p collisions at 250 GeV/c. Within t he transverse plane, the Hurst exponents measuring the anisotropy are consistent with unit value (i.e, no anisotropy). They are, however, on ly half that value when the longitudinal direction is compared to the transverse ones. Fractality, indeed, turns out to be self-affine rathe r than self-similar in multiparticle production. In three-dimensional phase space, power-law scaling is observed to be better realized in se lf-affine than in self-similar analysis.