UA(1) symmetry restoration from an in-medium η′ mass reduction in √sNN = 200 GeV Au+Au collisions

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A reduction of the mass of the η′ (958) meson may signal restoration of the UA(1) symmetry in a hot and dense hadronic matter, corresponding to the return of the 9th, "prodigal" Goldstone boson. We report on an analysis of a combined PHENIX and STAR data set on the intercept parameter of the twopion Bose-Einstein correlation functions, as measuremed in √sNN= 200 GeV Au+Au collisions at RHIC. To describe this combined PHENIX and STAR dataset, an in-medium η′ mass reduction of at least 200 MeV is needed, at the 99.9% confidence level in a broad model class of resonance abundances.

Original languageEnglish
Title of host publicationGRIBOV-80 Memorial Volume
Subtitle of host publicationQuantum Chromodynamics and Beyond - Proceedings of the Memorial Workshop Devoted to the 80th Birthday of V N Gribov
Pages307-318
Number of pages12
Publication statusPublished - Dec 1 2011
EventMemorial Workshop Devoted to the 80th Birthday of V N Gribov on Quantum Chromodynamics and Beyond - Trieste, Italy
Duration: May 26 2010May 28 2010

Publication series

NameGRIBOV-80 Memorial Volume: Quantum Chromodynamics and Beyond - Proceedings of the Memorial Workshop Devoted to the 80th Birthday of V N Gribov

Other

OtherMemorial Workshop Devoted to the 80th Birthday of V N Gribov on Quantum Chromodynamics and Beyond
CountryItaly
CityTrieste
Period5/26/105/28/10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Csörgo, T., Vértesi, R., & Sziklai, J. (2011). UA(1) symmetry restoration from an in-medium η′ mass reduction in √sNN = 200 GeV Au+Au collisions. In GRIBOV-80 Memorial Volume: Quantum Chromodynamics and Beyond - Proceedings of the Memorial Workshop Devoted to the 80th Birthday of V N Gribov (pp. 307-318). (GRIBOV-80 Memorial Volume: Quantum Chromodynamics and Beyond - Proceedings of the Memorial Workshop Devoted to the 80th Birthday of V N Gribov).