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Transverse momentum ($p_{T}$) spectra of charged particles are measured as afunction of event centrality in Pb$-$Pb collisions at $\sqrt{s_{NN}}=2.76$ TeVwith ALICE at the LHC. The spectra are compared to those measured in ppcollisions at the same collision energy in terms of the nuclear modificationfactor $R_{AA}$. The high-$p_{T}$ charge particle production in central Pb$-$Pbcollisions ($0-5%$) is strongly suppressed by a factor $\approx6$ at transversemomenta $p_{T}=6-7$ GeV/c as compared to expectation from independentsuperposition of nucleon-nucleon collisions. Above $p_{T}=7$ GeV/c there is asignificant rise in the nuclear modification factor, which reaches $R_{AA}\approx 0.4$ at $p_{T}=50$ GeV/c. The measured suppression of high-$p_{T}$particles is stronger than that measured at RHIC.

Charged Particle Production at Large Transverse Momentum in Pb$-$Pb Collisions at $\sqrt{s_{NN}}=2.76$ TeV Measured with ALICE at the LHC