Jet Reconstruction and Jet Background Classification with the ALICE experiment in PbPb collisions at the LHC

May 24, 2011, 4:20 PM
20m
Salle de l'Europe (Imperial Palace)

Salle de l'Europe

Imperial Palace

Allée Impérial 74000 Annecy, France Tél. : +33 4 50 09 30 00
Parallel Jets Jets

Speaker

Dr Christian Klein-Boesing (IKP Muenster)

Description

The quantification of the effect of parton energy loss, known as jet quenching, is one of the major goals of jet and high $p_T$ measurements in heavy-ion collisions. Here, the aim of the reconstruction of jets, as compared to single particle measurements, is to provide a more direct access to the original parton properties and the modification of the fragmentation process in heavy-ion collisions. For a clear interpretation of the reconstructed jet properties and the measurement of the inclusive jet spectrum in heavy-ion collisions a detailed characterization of the background and its fluctuation is paramount. In particular collective effects within one event can enhance or deplete locally the level of background and modify the jet energy scale. The ALICE detector with its excellent tracking capabilities is the ideal tool to study jet reconstruction based on charged particles in the presence of correlated and uncorrelated background down to particle $p_T$ of 150 MeV/$c$. We will evaluate the evolution of background effects using different probes embedded into heavy-ion data and quantify their influence on the reconstructed jet spectrum.

Primary author

Dr Christian Klein-Boesing (IKP Muenster)

Presentation materials