Reconstruction of Jet Properties in Pb-Pb Collisions with the ALICE-Experiment

TL;DR

This paper investigates how jets are modified in Pb-Pb collisions at the LHC, focusing on background subtraction and fluctuations to accurately reconstruct jet properties and understand the hot dense medium created.

Contribution

It provides a detailed method for subtracting background and assessing fluctuations in jet reconstruction in heavy-ion collisions, advancing the analysis of jet modifications.

Findings

Quantified the modification of near- and away-side jet yields in Pb-Pb collisions.

Developed a method to assess background fluctuations affecting jet energy measurements.

Enhanced understanding of jet quenching effects in the quark-gluon plasma.

Abstract

The study of the hot and dense medium created in heavy-ion collisions via the effect of parton energy loss is one of the major goals of jet and high-\pt\ measurements in these reactions. In particular the modifications of the longitudinal and transverse jet structure. Here the subtraction of the underlying heavy-ion event, as well as a precise knowledge of the background induced fluctuations of the reconstructed jet energy is required. We extract the modification of the near- and away-side jet yield in heavy-ion collisions at the LHC and present a detailed assessment of background fluctuations for jet reconstruction.