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CMS-HIN-10-005 ; CERN-PH-EP-2012-043
Study of high-$ p_{ \mathrm{T} } $ charged particle suppression in PbPb compared to pp collisions at $\sqrt{s_{NN}}$=2.76 TeV
Eur. Phys. J. C 72 (2012) 1945
Abstract: The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at sqrt(sNN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range pt = 5-10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 5 compared to the pp yield scaled by the number of incoherent nucleon-nucleon collisions. At higher pt, this suppression is significantly reduced, approaching roughly a factor of 2 for particles with pt in the range pt=40-100 GeV/c.
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Compact Muon Solenoid
LHC, CERN