Measuring Particle Production Using Tracklets

The purpose of the study was to access the particle production. Tracklets was adopted to measure the relationship between centrality ranged from outermost (70–80%) to central (0–5%) collisions and the primary charged-particle density dNchdη at SNN = 2. 76 TeV. It reveals that the dependence of centrality and that measured at lower collision energies ( SNN < 2.76 TeV) are similar.