Multiplicity dependence of particle production in pp collisions with PYTHIA

Abstract

In this thesis we compare the transverse momentum of specific particle species for PYTHIA datasets in pp events with a center of mass energy of 7 TeV. We compare the results for a PYTHIA dataset where the colour reconnection (CR) mechanism is switched on and a PYTHIA dataset where the CR mechanism is switched off. The overall mean pT for events CR events is significantly higher than for no CR events. The effects of CR seems to be more prominent in heavier particles. The data seems to suggest a linear mass dependence for the increase in pT.