Decays of the neutral and long-lived η and η′ mesons provide a unique, flavor-conserving
laboratory to test low-energy Quantum Chromodynamics and search for new physics …

This review treats the advances in Light Baryon Spectroscopy of the last two decades, which
were mainly obtained by measuring meson-production reactions at photon facilities all over …

We review the last two decades of using photon beams to measure the production of
mesons, and in particular the information that can be obtained on the spectrum of light, non …

The Jülich-Bonn dynamical coupled-channel approach is extended to include K Σ
photoproduction off the proton. Differential cross section and (double) polarization data for …

Partial-wave analysis of meson and photon-induced reactions is needed to enable the
comparison of many theoretical approaches to data. In both energy-dependent and …

Precision studies at electron–positron colliders with centre-of-mass energies in the charm–
tau region and below have strongly contributed to our understanding of light-meson …

The reactions γ p→ η p and γ p→ η′ p are measured from their thresholds up to the center-
of-mass energy W= 1.96 GeV with the tagged-photon facilities at the Mainz Microtron, MAMI …

A bstract We construct hadronic amplitudes for the three-body decays η (′)→ π+ π− π 0
and η′→ ηπ+ π− in a non-perturbative fashion, allowing for C-and CP-violating …

Results are presented for an updated multichannel energy-dependent partial-wave analysis
of π N scattering. Our earlier work incorporated single-energy amplitudes for π N→ π N, γ …

The γ n→ π 0 n differential cross section evaluated for 27 energy bins span the photon-
energy range 290–813 MeV (W= 1.195–1.553 GeV) and the pion cm polar production …