Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at sqrt[S(NN)] = 2.76 TeV.

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Forschungsartikel (Zeitschrift) | Peer reviewed

Zusammenfassung

The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair √ S NN = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section, the pseudorapidity density of primary charged particles at midrapidity is 1584 ± 4(stat) ± 76(syst), which corresponds to 8.3 ± 0.4(syst) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to pp collisions at similar collision energies, and about a factor 2.2 to central Au-Au collisions at √ S NN = 2.76 TeV. This measurement provides the first experimental constraint for models of nucleus-nucleus collisions at LHC energies.

Details zur Publikation

FachzeitschriftPhysical Review Letters (Phys. Rev. Lett.)
Jahrgang / Bandnr. / Volume105
Ausgabe / Heftnr. / Issue25
StatusVeröffentlicht
Veröffentlichungsjahr2010 (17.12.2010)
Sprache, in der die Publikation verfasst istEnglisch
DOI10.1103/PhysRevLett.105.252301

Autor*innen der Universität Münster

Andronic, Anton
Institut für Kernphysik
Bathen, Bastian
Professur für Kernphysik (Prof. Wessels)
Bergmann, Cyrano
Professur für Kernphysik (Prof. Wessels)
Dietel, Thomas
Institut für Kernphysik
Emschermann, David
Institut für Kernphysik
Heide, Markus Ansgar
Professur für Kernphysik (Prof. Wessels)
Kalisky, Matus
Institut für Kernphysik
Klein-Bösing, Christian
Institut für Kernphysik
Rammler, Markus
Institut für Kernphysik
Vernekohl, Don
Professur für Kernphysik (Prof. Wessels)
Wessels, Johannes
Professur für Kernphysik (Prof. Wessels)
Westerhoff, Uwe
Professur für Kernphysik (Prof. Wessels)
Wilde, Martin
Professur für Kernphysik (Prof. Wessels)
Wilk, Alexander
Institut für Kernphysik