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We review the present understanding of etaprime and eta meson physics andthese mesons as a probe of gluon dynamics in low-energy QCD. Recent highlightsinclude the production mechanism of eta and etaprime mesons in proton-nucleoncollisions from threshold to high-energy, the etaprime effective mass shift inthe nuclear medium, searches for possible eta and etaprime bound states innuclei as well as precision measurements of eta decays as a probe oflight-quark masses. We discuss recent experimental data, theoreticalinterpretation of the different measurements and the open questions andchallenges for future investigation.

Etaprime and Eta Mesons with Connection to Anomalous Glue