Pseudorapidity density of charged particles in p-Pb collisions at sqrt(sNN) = 5.02 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review Letters Year : 2013

Pseudorapidity density of charged particles in p-Pb collisions at sqrt(sNN) = 5.02 TeV

B. Abelev
  • Function : Author
Laurent Aphecetche
Guillaume Batigne
B. Cheynis
Magali Estienne
Marie Germain
Maxime Guilbaud
Gines Martinez Garcia
Philippe Pillot
C. Roy
Alexandre Shabetai
Diego Stocco

Abstract

The charged-particle pseudorapidity density measured over 4 units of pseudorapidity in non-single-diffractive (NSD) p-Pb collisions at a centre-of-mass energy per nucleon pair sqrt(sNN) = 5.02 TeV is presented. The average value at midrapidity is measured to be 16.81 \pm 0.71 (syst.), which corresponds to 2.14 \pm 0.17 (syst.) per participating nucleon. This is 16% lower than in NSD pp collisions interpolated to the same collision energy, and 84% higher than in d-Au collisions at sqrt(sNN) = 0.2 TeV. The measured pseudorapidity density in p-Pb collisions is compared to model predictions, and provides new constraints on the description of particle production in high-energy nuclear collisions.

Dates and versions

in2p3-00744553 , version 1 (23-10-2012)

Identifiers

Cite

B. Abelev, Laurent Aphecetche, A. Baldisseri, Guillaume Batigne, I. Belikov, et al.. Pseudorapidity density of charged particles in p-Pb collisions at sqrt(sNN) = 5.02 TeV. Physical Review Letters, 2013, 110, pp.032301. ⟨10.1103/PhysRevLett.110.032301⟩. ⟨in2p3-00744553⟩
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