  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.
