Počet záznamů: 1

Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at √s_NN=2.76  TeV

  1. 1.
    0365494 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Aamodt, K. - Abelev, B. - Quintana, A.A. - Adamová, Dagmar - Bielčíková, Jana - Kushpil, Svetlana - Kushpil, Vasilij - Mareš, Jiří A. - Polák, Karel - Šumbera, Michal - Závada, Petr
    Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at √s_NN=2.76  TeV.
    Physical Review Letters. Roč. 105, č. 25 (2010), "252301-1"-"252301-11" ISSN 0031-9007
    Grant CEP: GA MŠk LA08015
    Výzkumný záměr: CEZ:AV0Z10100502; CEZ:AV0Z10480505
    Klíčová slova: ALICE * CERN * Pb+Pb collisions
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 7.621, rok: 2010
    http://prl.aps.org/pdf/PRL/v105/i25/e252301 http://prl.aps.org/pdf/PRL/v105/i25/e252301

    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 √sNN=0.2  TeV. This measurement provides the first experimental constraint for models of nucleus-nucleus collisions at LHC energies.
    Trvalý link: http://hdl.handle.net/11104/0200724