The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at root s(NN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range p(T) = 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 p(T), this suppression is significantly reduced, approaching roughly a factor of 2 for particles with p(T) in the range p(T) = 40-100 GeV/c.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2012). Study of high-p(T) charged particle suppression in PbPb compared to pp collisions at root s(NN)=2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72(3) [10.1140/epjc/s10052-012-1945-x].

Study of high-p(T) charged particle suppression in PbPb compared to pp collisions at root s(NN)=2.76 TeV

BENAGLIA, ANDREA DAVIDE;DE GUIO, FEDERICO;DI MATTEO, LEONARDO;FIORENDI, SARA;GHEZZI, ALESSIO;MANZONI, RICCARDO ANDREA;MARTELLI, ARABELLA;MASSIRONI, ANDREA;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Govoni, P;DINARDO, MAURO EMANUELE;
2012

Abstract

The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at root s(NN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range p(T) = 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 p(T), this suppression is significantly reduced, approaching roughly a factor of 2 for particles with p(T) in the range p(T) = 40-100 GeV/c.
Articolo in rivista - Articolo scientifico
high energy collider; LHC; CMS; Pb-Pb collisions
English
2012
72
3
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2012). Study of high-p(T) charged particle suppression in PbPb compared to pp collisions at root s(NN)=2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72(3) [10.1140/epjc/s10052-012-1945-x].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46503
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