Inhaltszusammenfassung

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 ...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.» weiterlesen» einklappen

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DDC Sachgruppe:
Physik