Elucidating the jet cross-section in pp and pPb collisions at sNN = 5.02TeV

Abstract

In this paper, we present the charged particles jet cross-section study in [Formula: see text] and [Formula: see text] collisions at [Formula: see text][Formula: see text]TeV using PYTHIA8 (PYTHIA8.186 and PYTHIA8.306) and HIJING 2.0 models, in kinematic range of [Formula: see text][Formula: see text]GeV/c for [Formula: see text] collisions and [Formula: see text][Formula: see text]GeV/c for [Formula: see text] collisions. The jets are reconstructed for [Formula: see text], 0.3, 0.4 and 0.6 for the pseudorapidity interval of [Formula: see text] 0.9-R. The jets algorithms: cell jet and slow jet inside PYTHIA8.186 and anti-[Formula: see text] algorithm using HIJING 2.0 have been used for Monte Carlo simulations. The simulation results are then compared with measurements of the ALICE experiment. It is observed that all models’ predictions are lower than experimental data up to [Formula: see text][Formula: see text]GeV/c; after that, the Monte Carlo study of Cell and slow jet satisfies the experimental data. The CR tunes could not explain the ALICE data at high [Formula: see text] values due to nonperturbative QCD effects. We have also calculated the nuclear modification factor [Formula: see text], and no clear suppression has been seen in the case of [Formula: see text] collisions. The results from the models indicate that the QGP is not formed and that the cold nuclear matter effect exists in pPb collisions.