Details

Autor(en) / Beteiligte

• Bass, Steven D.
• Moskal, Pawel

Titel

η ′ and η mesons with connection to anomalous glue

Ist Teil von

• Reviews of modern physics, 2019-02, Vol.91 (1), p.015003, Article 015003

Ort / Verlag

College Park: American Institute of Physics

Erscheinungsjahr

2019

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• A review of the present understanding of η′ and η meson physics and these mesons as a probe of gluon dynamics in low-energy QCD is presented. Recent highlights include the production mechanism of η and η′ mesons in proton-nucleon collisions from threshold to high energy, the η′ effective mass shift in the nuclear medium, searches for possible η and η′ bound states in nuclei, as well as precision measurements of η decays as a probe of light-quark masses. Recent experimental data, theoretical interpretation of the different measurements, and the open questions and challenges for future investigation are discussed.