Wavelet analysis of angular distributions of secondary particles in high energy nucleus-nucleus interactions. Irregularity of particle pseudorapidity distributions

摘要

Experimental data on sulphur and oxygen nuclei interactions withphotoemulsion nuclei at the energies of 200 and 60 GeV/nucleon are analyzedwith the help of a continuous wavelet transform. Irregularities inpseudorapidity distributions of narrow groups of the secondary shower particlesin the mentioned interactions are observed at application of the second orderderivative of Gaussian as a wavelet. The irregularities can be interpreted asan existence of the preference emission angles of groups of particles. Such aneffect is expected at emission of Cherenkov gluons in nucleus-nucleuscollisions. Some of the positions of the observed peculiarities on thepseudorapidity axis coincide with those found by I.M.Dremin et al. (I.M.Dreminet al. Phys. Lett., 2001, v. B499, p. 97).)