Recent experiments studying the meson–nucleus interaction to extract meson–nucleus
potentials are reviewed. The real part of the potentials quantifies whether the interaction is …

A review of the present understanding of η′ and η meson physics and these mesons as a
probe of gluon dynamics in low-energy QCD is presented. Recent highlights include the …

The production of η and η′ mesons in photon-and hadron-induced reactions on free and
quasi-free nucleons and on nuclei is reviewed. The extensive database on γ N→ η N, for …

An exclusive measurement of the excitation function for the dd→ 3 He p π− reaction was
performed at the Cooler Synchrotron COSY-Jülich with the WASA-at-COSY detection …

Back in the mid-1980s, a new branch of investigation related to the interaction of eta mesons
with nuclei came into existence. It started with the theoretical prediction of possible exotic …

The strong energy dependence of the s-wave ηN scattering amplitude at and below
threshold, as evident in coupled-channels K-matrix fits and chiral models that incorporate …

The photoproduction of η mesons off nucleons bound in H 2 and H 3 e has been measured
in coincidence with recoil protons and recoil neutrons for incident photon energies from …

We analyze the data on cross sections and asymmetries for the pd→ η He 3 reaction close
to threshold and look for bound states of the η He 3 system. Rather than parameterizing the …

Abstract η NNN and η NNNN bound states are explored in stochastic variational method
(SVM) calculations within a pionless effective field theory (EFT) approach at leading order …

Precise total cross-sections and invariant-mass distributions have been measured for
photoproduction of pion pairs off the proton producing \ensuremathpπ^0π^0 and …