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

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.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2013, 110, pp.032301. <10.1103/PhysRevLett.110.032301>


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Contributeur : Sylvie Flores <>
Soumis le : mardi 23 octobre 2012 - 14:23:36
Dernière modification le : mercredi 27 juillet 2016 - 14:48:48

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B. Abelev, L. 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, American Physical Society, 2013, 110, pp.032301. <10.1103/PhysRevLett.110.032301>. <in2p3-00744553>

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