Flavour dependent study of effects of multiple parton interactions and color reconnection on the jets in high multiplicity pp collisions at √ s = 13 TeV

Abstract

This thesis presents a flavor-dependent study of the effects of multipar ton interactions (MPI) and color reconnection (CR) on the properties of jets in high multiplicity proton-proton (pp) collisions at a center-of-mass energy of 13 TeV. The study is performed using Monte Carlo simulations based on the Pythia 8 event generator, with the effects of multiple parton interactions and color reconnection implemented using the corresponding models in Pythia 8. Both multiple parton interactions and color recon nection significantly affect the properties of jets in pp collisions at high multiplicity. It is found that multiple parton interactions lead to an in crease in the number of final state particles and also affect the distribution of transverse momentum and energy of the particles inside the jet. Color reconnection also leads to a modification of the jet shape.