Prompt Photon Physics in ALICE: Gamma-hadron & Gamma-Jet Correlations

Prompt photons and light neutral-mesons will be detected and identified in the ALICE experiment at LHC with the PHOS detector and with the EMCal detector, whereas charged particles will be detected and identified by the central tracking system. We examine in this proceedings the possibility to do photon-tagged correlations in order to study how the dense partonic medium produced in heavy-ion collisions affects fragmentation of high energy quarks and gluons. Methods to identify prompt photons and to distinguish them against the background of decay and fragmentation photons are discussed.