η bound states in nuclei: a probe of flavour-singlet dynamics

2005/07/31 by Steven D. Bass, A. W. Thomas, Anthony W. Thomas · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/j.physletb.2006.01.071

published as Phys.Lett.B634:368-373,2006 · 8 pages, version to appear in PLB

arxiv created 2006/02/02 · openalex publication_date 2006/02/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

We argue that η bound states in nuclei are sensitive to the singlet component in the η. The bigger the singlet component, the more attraction and the greater the binding. Thus, measurements of η bound states will yield new information about axial U(1) dynamics and glue in mesons. η–η′ mixing plays an important role in understanding the value of the η–nucleon scattering length.

Citations

• QCD and theη′mass: Instantons or confinement?
• Are η- and ω-nuclear states bound ?

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• The η ′ N interaction from a chiral effective model and η ′-N bound state