Conveners
Parallel session B1: Light Mesons and Baryons 1
- Rafał Lalik (Jagiellonian University)
The Jagiellonian Positron Emission Tomograph (J-PET) is a multipurpose detector for tests of discrete symmetries and quantum entanglement of photons originating from the decay of positronium atoms. The research is performed by measurement of angular correlations in the annihilations of the lightest leptonic bound system. The J-PET detector is the only device which enables determination of...
The High Acceptance DiElectron Spectrometer (HADES) is a fixed target experiment at GSI, Darmstadt, Germany, with large geometrical acceptance and high efficiency, dedicated to the studies of heavy-ions, proton and pion induced reactions. In February 2022, proton-proton reactions at 4.5 GeV beam kinetic energy were measured and $e^{+}e^{-}$ data was collected. The data allows to study the...
The world's largest sample of $J/\psi$ events accumulated at the BESIII detector offers a unique opportunity to investigate $\eta$ and $\eta^\prime$ physics via two-body $J/\psi$ radiative or hadronic decays. In recent years the BESIII experiment has made significant progresses in $\eta/\eta^\prime$ decays. A selection of recent highlights in light meson spectroscopy at BESIII are reviewed in...
The NA62 experiment at CERN took data in 2016–2018 with the main goal of measuring the $K^+ \rightarrow \pi^+ \nu \bar\nu$ decay. The NA62 dataset is also exploited to search for light feebly interacting particles produced in kaon decays. Searches for $K^+\rightarrow e^+ N$, $K^+ \rightarrow \mu^+ N$ and $K^+ \rightarrow \mu^+ \nu X$ decays, where N and X are massive invisible particles, are...
