FIRST RESULTS ON CHARGED PARTICLE PRODUCTION IN ALICE EXPERIMENT AT LHC

The ALICE experiment is the dedicated heavy-ion experiment at the CERN LHC, but its physics program also covers pp physics. ALICE, since its start, has collected pp data at 3 different center-of-mass energies - 900 GeV, 2.36 TeV and 7 TeV. Here, a brief description of the experimental apparatus is given, and some recent results on the particle multiplicity and charged particle spectra are presented. Results are compared with the existing data from lower energies and with Monte Carlo predictions.