Forward-Backward Multiplicity Correlations for Proton-Proton Collisions with ALICE at LHC-CERN

Abstract: This thesis presents the study of two-particle pseudorapidity correlations in pp-collisions at √s = 13 TeV using the ALICE detector at LHC, CERN. The correlation function was calculated as a function of multiplicity and was repeated for several multiplicity classes and different charge combinations in the forward-backward and central regions of the detector, respectively. The results reveal an enhancement of particle pairs being emitted in the same direction and strong autocorrelations using the mid-multiplicity estimator at low multiplicities. Comparing the results with PYTHIA simulations, similar results are obtained for both multiplicity estimators. This reveals that PYTHIA simulations are able to accurately reproduce these results, notably, also the autocorrelations are reproduced.