The charged-particle pseudorapidity density measured over four units of pseudorapidity in nonsingle- p diffractive p þ Pb collisions at a center-of-mass energy per nucleon pair √s(NN)=5.02 TeV is presented. The average value at midrapidity is measured to be 16.81,71, which corresponds to 2.14 0.17 syst per participating nucleon, calculated with the Glauber model. This is 16% lower than in nonsingle-diffractive pp collisions interpolated to the same collision energy and 84% higher than p in d þ Au collisions at √sNN=0.2 TeV. The measured pseudorapidity density in p þ Pb collisions is compared to model predictions and provides new constraints on the description of particle production in high-energy nuclear collisions.

Pseudorapidity Density of Charged Particles in p+Pb Collisions at √s(NN)=5.02  TeV

DE CARO, ANNALISA;DE GRUTTOLA, DANIELE;DE PASQUALE, Salvatore;FUSCO GIRARD, Mario;PAGANO, PAOLA;VIRGILI, Tiziano;
2013-01-01

Abstract

The charged-particle pseudorapidity density measured over four units of pseudorapidity in nonsingle- p diffractive p þ Pb collisions at a center-of-mass energy per nucleon pair √s(NN)=5.02 TeV is presented. The average value at midrapidity is measured to be 16.81,71, which corresponds to 2.14 0.17 syst per participating nucleon, calculated with the Glauber model. This is 16% lower than in nonsingle-diffractive pp collisions interpolated to the same collision energy and 84% higher than p in d þ Au collisions at √sNN=0.2 TeV. The measured pseudorapidity density in p þ Pb collisions is compared to model predictions and provides new constraints on the description of particle production in high-energy nuclear collisions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3994255
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