Study of Centrality with New Method in Nucleus-Nucleus Collisions at 4.2 A Gev/C

We used a method based on Random Matrix Theory to analysis the simulation data on 12CC collisions at 4.2 A GeV/c generated from ultra relativistic Quantum Molecular Dynamics code1.3.The results are associated with the onset of region of central collisions by observed changes in the nearest-neighbor momentum spacing distributions for different secondary particles multiplicities.