Extensions of nuclear physics to the strange sector are reviewed, covering data and models
of Λ and other hypernuclei, multistrange matter, and antikaon bound states and …

The search for He 4-η bound states was performed with the WASA-at-COSY facility via the
measurement of the excitation function for the dd→ He 3 n π 0 and dd→ He 3 p π …

Earlier work suggested that the in-medium πN threshold isovector amplitude b 1 (ρ) gets
renormalized in pionic atoms by∼ 30% away from its ρ= 0 free-space value, relating such …

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 …

The onset of binding η (548) mesons in nuclei is studied in the He isotopes by doing precise
η NNN and η NNNN few-body stochastic variational method calculations for two semi …

We report on precise hyperspherical-basis calculations of ηNN and η NNN quasibound
states, using energy dependent ηN interaction potentials derived from coupled-channel …

The in-medium ηN interaction near and below threshold is constructed from a free-space
chirally-inspired meson–baryon coupled-channel model that captures the physics of the …

Although the idea of quasi-bound states of an η meson with a nucleus has been around for a
quarter of a century [1], no experiment has yet shown incontrovertible evidence for their …

A general algorithm for handling the energy dependence of meson–nucleon amplitudes in
the nuclear medium has been recently applied to antikaons and to eta mesons. Here we test …

We search for an evidence of eta-mesic 4He with the WASA-at-COSY detector. Two
dedicated experiments were performed at the Cooler Synchrotron COSY-Juelich. The …