Measurements of the particle production properties with the ATLAS detector

The ATLAS collaboration extended previous studieson the under at 7 TeV with a leading track or jet or Z boson by a new study at 13 TeV, measuring the number and transverse-momentum sum of charged particles as a function of pseudorapidity and azimuthal angle in dependence of the reconstructed leading track. Studies of particle correlations in high-energy collisions can provide valuable insights into the detailed understanding of the space-time geometry of the hadronization region. The ATLAS collaboration has studied the momentum difference between pairs of charged particles in data collected at center-of-mass energies of 0.9TeV and 7TeV in view of the presence of Bose-Einstein correlations.