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 √s_NN=5.02  TeV

BREGANT, MARCO;CAMERINI, Paolo;CONTIN, GIACOMO;FRAGIACOMO, ENRICO;LEA, RAMONA;MARGAGLIOTTI, GIACOMO;PIANO, STEFANO;RUI, RINALDO;VENARUZZO, MASSIMO;V. Zaccolo;
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.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

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/11368/2659114
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 189
  • ???jsp.display-item.citation.isi??? 135
social impact