Impact of parton rescattering on analysis of p+p collision data at LHC energies

ALICE, CMS, and ATLAS measurements for p + p collisions at LHC energies (s=0.9, 2.36, and 7 TeV) are analyzed systematically using the parton and hadron cascade model PACIAE which is based on the PYTHIA model. We emphasize the impact of parton rescattering on the analysis of experimental data by comparing the PACIAE results (with parton rescattering) to the PYTHIA ones (without parton rescattering). It turned out that the parton rescattering in the initial fireball plays an role in understanding the experimental data and the parton rescattering effect increases with the reaction energy increasing.