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


CMS Collaboration; Chatrchyan, S; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Aguiló, E; Amsler, C; Chiochia, V; De Visscher, S; Favaro, C; Ivova Rikova, M; Millan Mejias, B; Otiougova, P; Robmann, P; Snoek, H; Verzetti, M; et al (2012). Study of high-p T charged particle suppression in PbPb compared to pp collisions at sNN−−−√=2.76 TeV. European Physical Journal C - Particles and Fields, 72:1945.

Abstract

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 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.

Abstract

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 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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2012
Deposited On:08 Mar 2013 13:52
Last Modified:21 Nov 2017 17:17
Publisher:Springer
ISSN:1434-6044
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:https://doi.org/10.1140/epjc/s10052-012-1945-x

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