Gluonic effects in eta and eta-prime physics

Abstract

We review the theory and phenomenology of the axial U(1) problem with emphasis on the role of gluonic degrees of freedom in eta and eta' production processes, especially the low-energy pN -> pN eta and pN -> pN eta' reactions.

20 pages, 2 figures, Invited talk at the WASA Workshop on Eta Physics, October 2001, Uppsala, Sweden

References in corpus (1)

• ${\eta }^{\prime }$ production in proton-proton scattering close to threshold}

Cited by in corpus (10)

• The Spin Structure of the Proton
• Eta bound states in nuclei: a probe of flavour-singlet dynamics
• Improved Wilson QCD simulations with light quark masses
• Measurement of the Matrix Element for the Decay ${\eta }^{\prime }\to \eta {\pi }^{+}{\pi }^{-}$
• Pseudoscalar Meson Decay Constants and Couplings, the Witten-Veneziano Formula beyond large N_c, and the Topological Susceptibility
• Near threshold production of the eta meson via the quasi-free pn --> pn eta reaction
• Few-body aspects of the near threshold pseudoscalar meson production
• Eta-nucleon and eta-prime-nucleon coupling constants in QCD and the role of gluons
• Upper limit of the total cross section for the pn --> pn eta' reaction
• The U(1)_A Anomaly and QCD Phenomenology