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ALICE is one of the four experiments at the CERN LHC (Large Hadron Collider) which has started its activity the 10th of September 2008. Though a large physics program for the expected p-p collisions (up to 14TeV) has been planned, ALICE is the LHC experiment devoted also to heavy ion collisions (Pb-Pb at 5.5 ATeV), which have the goal to detect and study the Quark Gluon Plasma (QGP), the new phase of matter where quarks and gluons are no longer confined inside hadrons and where a partial restFigura_Aliceoration of the chiral symmetry is expected. In order to explore all the observables needed to characterize this new state of matter (the same matter which would have existed some microseconds after the Bing Bang), ALICE plans to measure global and bulk properties by identified hadrons, hadronic resonanances, dileptons and direct photons. Moreover, characterization of the early stage of the collision will be achieved by detection of jets, high pt particles, open charm and open beauty. Deconfinement and chiral symmetry restoration will be probed by charmonium and bottonium spectroscopy and by resonance decay respectively.

Due to this ambitious program, ALICE is a very complex experiment made by different sub-detectors (figure) to address specific physics topics. Catania ALICE group is involved in the project and in the construction of two of such detectors: the Inner Tracking System (ITS) and the Electromagnetic Calorimeter (EMCal) (see Activity Report pag 77). Moreover the Catania team is studying accurately the ability of the ALICE detector to reconstruct some hadronic resonances (such as K*(892), Λ(1520), ρ....) both in in p-p and in Pb-Pb collisions (see Activity Report pag 77).



A. Andronico, A. Badalà, R. Barbera, F. Blanco, F. Fichera, N. Giudice, A. Grimaldi, N. Guardone, P. La Rocca, F. Librizzi, S. Lo Faro, F. Noto, G. S. Pappalardo, A. Pulvirenti, F. Riggi, G. Salemi, S. Urso, M. Mazzeo, A. Palmeri, C. Petta, A. Rapicavoli, G. Rizza, V. Sparti, R. Vernet.




Catania ALICE group

Activity Report pag 77


Ultimo aggiornamento Venerdì 08 Gennaio 2010 19:21


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