High pT direct photon measurement and correlations with jets in ALICE at the LHC

par Dr Gustavo Conesa Balbastre (INFN - Laboratori Nazionali di Frascati)

mercredi 18 mars 2009, 11:00 → 12:00 Europe/Paris

Amphi M. Perey (IPHC/DRS)

Direct photons will be produced at the LHC and the ALICE experiment will measure and identify them with the help of its calorimeters and tracking system. Their measurement will be challenging since there are different sources of direct photons, like prompt and fragmentation photons, and they are not the main photon source, which is neutral mesons decay. Here, I will discuss the capability of the EMCal calorimeter of detecting prompt photons with the help of the shower shape analysis and the isolation cuts. Also, I will present a study of the production of fragmentation photons and charged hadrons in PYTHIA and the effect on the isolation of such particles and their correlation with other hadrons and jets.