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Study of high-pT charged particle suppression in PbPb compared to pp collisions at √sNN = 2.76 TeV

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journal contribution
posted on 01.03.2012, 00:00 authored by B. Akgun, R. Carroll, Thomas A. Ferguson, Y. Iiyama, D. W. Jang, S. Y. Jun, Y. F. Liu, Manfred PauliniManfred Paulini, James RussJames Russ, Helmut Vogel, Igor VorobievIgor Vorobiev, CMS Collaboration

The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at √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 7 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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© CERN for the benefit of the CMS collaboration 2012.



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