Fast embedding of jets in heavy-ion collisions for background studies with ALICE

TL;DR

This paper presents a fast method for embedding jets in heavy-ion collision data to analyze background effects and improve jet reconstruction accuracy in the presence of complex underlying events.

Contribution

It introduces a novel fast embedding technique for jets in heavy-ion collisions, enabling detailed background fluctuation studies and validation of subtraction methods.

Findings

Effective background fluctuation characterization

Validation of background subtraction techniques

Enhanced jet reconstruction performance

Abstract

Jet reconstruction in heavy-ion collisions is strongly affected by soft background from the underlying event. For an appropriate interpretation of the jet observables it is essential to understand the influence of the background and its fluctuations on the reconstructed jets. With this purpose we study random cones and the response of a known probe embedded in a heavy-ion events. The embedded probe can be a single high-p_T track or a jet from a simulated or real pp event. This allows a detailed study of background fluctuations and verification of the performance of background subtraction methods.