Identification of photon-tagged jets in the ALICE experiment

G. Conesa (1, 2) , H. Delagrange (2) , J. Diaz (1) , Y.V. Kharlov (3) , Y. Schutz (2, 4)

1 IFIC - Instituto de Fisica Corpuscular
2 SUBATECH - Laboratoire SUBATECH Nantes
3 INSTITUTE FOR HIGH-ENERGY PHYSICS - Institute for High-Energy Physics
4 CERN - European Organization for Nuclear Research

The ALICE experiment at LHC will detect and identify prompt photons and light neutral-mesons with the PHOS detector and the additional EMCal electromagnetic calorimeter. Charged particles will be detected and identified by the central tracking system. In this article, the possibility of studying the interaction of jets with the nuclear medium, using prompt photons as a tool to tag jets, is investigated by simulations. New methods to identify prompt photon-jet events and to distinguish them from the jet-jet background are presented.

Mots clés: High-energy gamma rays; electromagnetic calorimeters; quark-gluon plasma

Domaines: Analyse de données, Statistiques et Probabilités [physics.data-an]; Physique des Hautes Energies - Expérience [hep-ex]

G. Conesa, H. Delagrange, J. Diaz, Y.V. Kharlov, Y. Schutz. Identification of photon-tagged jets in the ALICE experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008, 585, pp.28-39. ⟨10.1016/j.nima.2007.10.050⟩. ⟨in2p3-00188008⟩