%0 Journal Article %T Study of Centrality with New Method in Nucleus-Nucleus Collisions at 4.2 A Gev/C %J International Journal of Theoretical and Mathematical Physics %@ 2167-6852 %D 2012 %I %R 10.5923/j.ijtmp.20120203.03 %X 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. %K Random Matrix Theory %K Nearest Neighbor Momentum Spacing Distributions %K Ultra Relativistic Quantum Molecular Dynamics %U http://article.sapub.org/10.5923.j.ijtmp.20120203.03.html