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.
|Data di pubblicazione:||2013|
|Titolo:||Pseudorapidity density of charged particles in p+Pb collisions at √sNN=5.02 TeV|
|Rivista:||PHYSICAL REVIEW LETTERS|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.110.032301|
|Codice identificativo ISI:||WOS:000313755000004|
|Codice identificativo Scopus:||2-s2.0-84872729690|
|Appare nelle tipologie:||Articolo su Rivista|