Dependence of the cut-off parameters for the cluster reconstruction on incident momenta

Abstract

In this work, firstly, we have determined the multiplicities of protons that are involved from projectiles to interactions, and secondly, the mean incident momentum using experimental data on the collisions of proton, helium, oxygen, silicon, and sulfur with the nuclear emulsion at 4.5A GeV/c. We have studied the dependences of clot numbers, number of particles in the clot, rapidity, and the mean azimuthal value on the variable dij, and the dependence of the cluster number on the mean value of the variable dij. Using the “Cone” algorithm for the clustering, we have precisely identified that the cut-off parameter to compose the clusters consisted of s and f tracks produced in (p, He, C, O, Si, S) + Em collisions decreases by the power law with mean values of incident momentum.

Keywords

• Collision
• high-energy
• particle
• nucleus
• rapidity
• scattering and azimuthal angles
• multiplicity
• nuclear photographic emulsion
• momentum
• cluster
• cut-off parameter
• algorithm