Study of high-pT charged particle suppression in PbPb compared to pp collisions at sqrt(sNN)=2.76 TeV.
Articolo
Data di Pubblicazione:
2012
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.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
heavy ion: scattering; lead; p p: scattering; charged particle: transverse momentum; charged particle: yield: measured; transverse momentum: high; charged particle: suppression; CERN LHC Coll; CMS; transverse momentum: dependence; nuclear matter: effect; impact parameter: dependence
Elenco autori:
Baesso, PAOLO GIUSEPPE; Berzano, Umberto; Ratti, SERGIO PEPPINO; Riccardi, Cristina; Torre, Paola; Vitulo, Paolo; Viviani, Claudio
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