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

By Cms Collaboration. 2012

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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. Submitted to the European Physical Journal C ∗See Appendix A for the list of collaboration members ar X iv :1 20 2. 25 54 v2 [ nu cl -e x] 3 M ay 2 01 2

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/56c5325dadd9ce5ac8cfacf378a6df0e6c7b4239