Significant in-medium reduction of the mass of eta' mesons in sqrt(s(NN)) = 200 GeV Au+Au collisions

Details Significant in-medium reduction of the mass of eta' mesons in sqrt(s(NN)) = 200 GeV Au+Au collisions Significant in-medium reduction of the mass of eta' mesons in sqrt(s(NN)) = 200 GeV Au+Au collisions

2009-05-18

arxiv.org/abs/0905.2803v4

Nucl.Phys.A830:631c-632c,2009

Physics

Nuclear Physics

Nuclear Theory

Dedicated to 60th birthday of Miklos Gyulassy. 2 pages, 4 figures - To appear in the conference proceedings for Quark Matter 2

Scientific paper

10.1016/j.nuclphysa.2009.10.112

PHENIX and STAR data on the intercept parameter of the two-pion Bose-Einstein
correlation functions in $\sqrt{s_{NN}}= 200$ GeV Au+Au collisions were
analysed in terms of various models of hadronic abundances. To describe these
data, an in-medium $\eta^\prime$ mass decrease of at least 200 MeV was needed
in each case.

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