Return of the prodigal Goldstone boson

J. Kapusta, D. Kharzeev, L. McLerran

Research output: Contribution to journalArticlepeer-review

122 Scopus citations


We propose that the mass of the η' meson is a particularly sensitive probe of the properties of finite energy density hadronic matter and quark-gluon plasma. We argue that the mass of the η' excitation in hot and dense matter should be small, and, therefore, that the η' production cross section should be much increased relative to that for pp collisions. This may have observable consequences in dilepton and diphoton experiments.

Original languageEnglish (US)
Pages (from-to)5028-5033
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number9
StatePublished - 1996

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