QCD symmetries in eta and etaprime mesic nuclei

Abstract

We discuss the role of QCD symmetries and confinement in understanding eta and etaprime mesic nuclei. Eta and etaprime 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 etaprime mass in nuclei from the CBELSA/TAPS collaboration are very similar to the prediction of the Quark Meson Coupling model. In the model eta-etaprime mixing induces a factor of two enhancement of the eta-nucleon scattering length relative to the prediction with a pure octet eta, with real part about 0.8 fm.

12 pages, invited talk at the Second International Symposium on Mesic Nuclei, Cracow, Poland, September 22-25 2013

References in corpus (2)

• Determination of the η'-nucleus optical potential
• Anomalous glue, eta and eta-prime mesons

Cited by in corpus (26)

• Nuclear-bound quarkonia and heavy-flavor hadrons
• Etaprime and Eta Mesons with Connection to Anomalous Glue
• Determination of the eta'-proton scattering length in free space
• Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility
• In-medium Eta-Nucleon interactions and Eta nuclear bound states
• Influence of the axial anomaly on the decay $N(1535)\to N\eta$
• Upper limits for the production of the eta-mesic Helium in the dd ->3Henpi0 and dd -> 3Heppi- reactions
• Few-body aspects of the near threshold pseudoscalar meson production
• $\eta$ and ${\eta }^{\prime }$ mesons in nuclear matter and nuclei
• Search for the $\eta$ mesic ${}^3$He in the $pd\to dp{\pi }^0$ reaction with the WASA-at-COSY facility
• Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions
• Status and Perspectives of the Search for Eta-Mesic Nuclei
• Search for the manifestation of the mesic-nuclei on the dd-->3HeNpi excitation function measured with WASA-at-COSY
• Study of the N N eta' production with COSY-11
• Luminosity determination for the proton-deuteron reaction using pd -> 3He eta channel with WASA-at-COSY detector
• Luminosity determination for the deutron-deutron reactions using free and quasi-free reactions with WASA-at-COSY detector
• Search for the eta-mesic Helium bound state with the WASA-at-COSY facility
• Study of in-medium ${\eta }^{\prime }$ properties in the ($\gamma$, ${\eta }^{\prime }p$) reaction on nuclei
• Possible ${\eta }^{\prime }d$ bound state and its $s$-channel formation in the $\gamma d\to \eta d$ reaction
• Status of the search for $\eta$-mesic nuclei with particular focus on $\eta$-Helium bound states
• Formation of eta'(958) Meson Bound States by the 6Li(gamma,d) reaction
• Study of the eta meson production with polarized proton beam
• Aspects of anomalous glue
• Search for the 4He-eta bound state in dd->(4He-eta)_{bound}->3He n pi0 and dd->(4He-eta)_{bound}->3He p pi- reactions with the WASA-at-COSY facility
• QCD symmetries and the eta and etaprime in nuclei
• Close to threshold eta' meson production in proton-proton collisions at COSY-11