Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions atsNN=2.76 TeV

2010/12/31 by K. Aamodt, ALICE Collaboration, A. Abrahantes Quintana +97 · 13 citations
Engineering · Physics and Astronomy · #Atomic physics #Centrality #Charged particle #Collision #Computer science #High-Energy Particle Collisions Research #Ion #Multiplicity (mathematics) #Nuclear physics #Nuclear reactor physics and engineering #Particle (ecology) #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Statistics #nucl-ex

paper · pdf · doi:10.1103/physrevlett.106.032301

published as Phys. Rev. Lett. 106 (2011) 032301 · 14 pages, 3 captioned figures, 1 table, authors from page 9, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3891

openalex publication_date 2011/01/20 · arxiv created 2017/09/28 · arxiv updated 2017/10/02 · openalex created_date 2020/06/05 · openalex updated_date 2026/08/06

Abstract

The centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at sqrt[s_NN]=2.76 TeV is presented. The charged-particle density normalized per participating nucleon pair increases by about a factor of 2 from peripheral (70%-80%) to central (0%-5%) collisions. The centrality dependence is found to be similar to that observed at lower collision energies. The data are compared with models based on different mechanisms for particle production in nuclear collisions.

Citations

• Review of Particle Physics
• Charged-particle multiplicity measurement in proton–proton collisions at √(s)=0.9 and 2.36 TeV with ALICE at LHC

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