Prompt Photon Identification in the ALICE Experiment: The Isolation Cut Method

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 and EMCal detectors. Charged particles will be detected and identified by the central tracking system. In this paper, a method to identify prompt photons and to separate them from the background of hadrons and decay photons in PHOS with the help of isolation cuts is presented.

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

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Physique Nucléaire Expérimentale [nucl-ex]

G. Conesa, H. Delagrange, J. Diaz, Y.V. Kharlov, Y. Schutz. Prompt Photon Identification in the ALICE Experiment: The Isolation Cut Method. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007, 580, pp.1446-1459. ⟨10.1016/j.nima.2007.06.014⟩. ⟨in2p3-00138058⟩