2013/11/30 by Steven D. Bass, A. W. Thomas, Anthony W. Thomas · 35 citations
Physics and Astronomy · #Bound state #Component (thermodynamics) #Coupling (piping) #Eta meson #Flavour #High-Energy Particle Collisions Research #Homogeneous space #Meson #Mixing (physics) #Nuclear physics #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Scattering #Singlet state #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.5506/aphyspolb.45.627
published in Acta Physica Polonica B 45(3), 627 (Jagiellonian University) · 12 pages, invited talk at the Second International Symposium on Mesic Nuclei, Cracow, Poland, September 22-25 2013
arxiv created 2013/12/19 · openalex publication_date 2014/01/01 · arxiv updated 2015/06/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We discuss the role of QCD symmetries and confinement in understanding η- and η′-mesic nuclei. η and η′ bound states in nuclei are sensitive to the flavour-singlet component in the meson. The bigger the singlet component, the more attraction and the greater the binding. Recent results on the η′ mass in nuclei from the CBELSA/TAPS Collaboration are very similar to the prediction of the Quark Meson Coupling model. In the model, η–η′ mixing induces a factor of two enhancement of the η-nucleon scattering length aηN relative to the prediction with a pure octet η with real part about 0.8 fm.