and mesons with connection to anomalous glue
Oct 29, 201823 pages
Published in:
- Rev.Mod.Phys. 91 (2019) 1, 015003
- Published: Feb 16, 2019
e-Print:
- 1810.12290 [hep-ph]
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Abstract: (APS)
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.Note:
- Review, 25 pages, 11 figures, to appear in Reviews of Modern Physics •
- Submitted to Rev.Mod.Phys.
- Nuclear physics
- eta: decay
- eta(958): mass
- quantum chromodynamics
- energy: low
- eta: production
- nuclear matter
- bound state
- p nucleon: scattering
- gluon
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