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2013 | 11 | 5 | 553-559
Tytuł artykułu

Effects of chain decays, radial flow and U A(1) restoration on the low-mass dilepton enhancement in $$\sqrt {s_{NN} } = 200$$ GeV Au+Au reactions

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In $$\sqrt {s_{NN} } = 200$$ GeV Au+Au collisions PHENIX reported a significant enhancement in the low-mass region (0.1 < m ee < 0.7 GeV) of the dielectron spectrum, which is still not fully understood. Several theoretical works and an indirect measurement suggest, due to the possible restoration of the U A(1) part of the chiral symmetry in a hot and dense medium, that the mass of the η′ meson may substantially decrease. This work reports on a statistically acceptable description of the PHENIX low-mass dilepton enhancement using a radial flow dominated meson spectra, chain decays of long-lived resonances and an in-medium η′ mass modification.
Wydawca

Czasopismo
Rocznik
Tom
11
Numer
5
Strony
553-559
Opis fizyczny
Daty
wydano
2013-05-01
online
2013-07-28
Twórcy
  • Eötvös Loránd University, Pázmány Péter sétány 1/a., 1117, Budapest, Hungary, vargyas@bnl.gov
  • Wigner Research Centre for Physics of the Hungarian Academy of Sciences, Konkoly-Thege Miklós út 29-33., 1121, Budapest, Hungary, csorgo.tamas@wigner.mta.hu
  • Nuclear Physics Institute of The Academy of Sciences of the Czech Republic, 25068, Řež, Czech Republic, robert.vertesi@ujf.cas.cz
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-013-0249-6
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