The charged-particle pseudorapidity density measured over four units of pseudorapidity in nonsingle-diffractive p+Pb collisions at a center-of-mass energy per nucleon pair √sNN=5.02  TeV is presented. The average value at midrapidity is measured to be 16.81±0.71  (syst), 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 in d+Au collisions at √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.

Pseudorapidity Density of Charged Particles in p+Pb Collisions at sqrt[s_{NN}]=5.02  TeV

ARNALDI, Roberta;BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;L. Bianchi;BOTTA, Elena;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;MASERA, Massimo;MILANO, LEONARDO;RAMELLO, Luciano;RUSSO, RICCARDO;SCOMPARIN, ENRICO;SITTA, Mario;VERCELLIN, Ermanno;
2013-01-01

Abstract

The charged-particle pseudorapidity density measured over four units of pseudorapidity in nonsingle-diffractive p+Pb collisions at a center-of-mass energy per nucleon pair √sNN=5.02  TeV is presented. The average value at midrapidity is measured to be 16.81±0.71  (syst), 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 in d+Au collisions at √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.
2013
110
032301
032301
pseudorapidity density, nonsingle-diffractive p-Pb collision
B. Abelev;J. Adam;D. Adamová;A. M. Adare;M. M. Aggarwal;G. Aglieri Rinella;M. Agnello;A. G. Agocs;A. Agostinelli;Z. Ahammed;N. Ahmad;A. Ah...espandi
File in questo prodotto:
File Dimensione Formato  
PRL_110_2013_032301.pdf

Accesso aperto

Tipo di file: PDF EDITORIALE
Dimensione 270.71 kB
Formato Adobe PDF
270.71 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/130433
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 189
  • ???jsp.display-item.citation.isi??? 126
social impact