Hadronic interaction of η and η′ mesons with nucleons

Hadronic interaction of η and η ′ mesons with protons Pawe

Hadronic interaction of η and η ′ mesons with protons Acknowledgement Accomplishment of the experiments presented in this treatise was possible only thanks to the joined effort of friends from the COSY-11 group with whom I had the luck to work during many years of my involvement at the Jagellonian University in Poland and the Research Centre Jülich in Germany. I am greatly indebted to all of th...

Hadronic Interaction of the Η Meson with Two Nucleons

P. MOSKAL, H.-H. ADAM, A. BUDZANOWSKI, R. CZYŻYKIEWICZ, D. GRZONKA, M. JANUSZ, L. JARCZYK, B. KAMYS, A. KHOUKAZ, K. KILIAN, P. KLAJA, J. MAJEWSKI, W. OELERT, C. PISKOR–IGNATOWICZ , J. PRZERWA, T. ROŻEK, T. SEFZICK, M. SIEMASZKO, J. SMYRSKI, A. TÄSCHNER, P. WINTER, M. WOLKE, P. WÜSTNER, W. ZIPPER ∗ Nuclear Physics Department, Jagellonian University, Cracow, 30-059, Poland † Institut für Kernphys...

Hadronic η and η ′ decays

The hadronic decays η, η′ → 3π and η′ → ηππ are investigated within the framework of U(3) chiral effective field theory in combination with a relativistic coupled-channels approach. Final state interactions are included by deriving sand p-wave interaction kernels for meson-meson scattering from the chiral effective Lagrangian and iterating them in a Bethe-Salpeter equation. Very good overall ag...

2 00 1 Photoproduction of η and η ′ mesons off nucleons close to threshold 1

The importance of Born terms and resonance exchange for η and η ′ photoproduction off both the proton and neutron within U (3) baryon chi-ral perturbation theory is investigated. Low-lying resonances such as the vector mesons and J P = 1/2 + , 1/2 − baryon resonances are included explicitly and their contributions together with the Born terms are calculated. The coupling constants of the resona...

The η and η ′ mesons in QCD