Clusterization in multiple particle production

Clusterization of secondary particles in inelastic π-C, π-p collisions (pπ=40 GeV/c), pC, pTa collisions (pp=10 GeV/c), and pC, dC, αC, CC collisions (p0=4.2 GeV/c per nucleon) obtained using pictures from the 2m-propane bubble chamber have been investigated. For this purpose the method of cluster separation based on the space of normalized to the same mass relative 4-velocities was suggested and analyzed. A considerable part of secondary particles (protons, π mesons) appeared to be produced by clusters. Temperatures of the clusters depend on their rapidity and the highest temperature are connected with clusters from the central region on the rapidity scale