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arXiv · hep-ph/9507343

The Return of The Prodigal Goldstone Boson

J. Kapusta·D. Kharzeev·L. McLerran
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Abstract

We propose that the mass of the $η^\prime$ 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 $η^\prime$ excitation in hot and dense matter should be small, and therefore that the $η^\prime$ production cross section should be much increased relative to that for pp collisions. This may have observable consequences in dilepton and diphoton experiments.

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J. Kapusta, D. Kharzeev, L. McLerran. 1995-10-01. The Return of The Prodigal Goldstone Boson. https://doi.org/10.1103/physrevd.53.5028

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