Conveners
Parallel Session C4: In-medium and strangeness
- Krzysztof Piasecki (University of Warsaw)
The internal structure of hyperons is controversially discussed based on various models, e.g. quark, bag and molecular models [1,2]. Recent publications presents a new approach wherein exited hyperon states are dynamically generated by interactions between the baryonic decuplet and the masonic octet. That approach predicts also a substantial in-medium modifications for some hyperons, like...
We study the two step sequential one pion production mechanism, $np(I=0)→π^{−}pp$, followed by the fusion reaction $pp→π^{+}d$, in order to describe the $np→π^{+}π^{−}d$ reaction with $π^{+}π^{−}$ in $I=0$, where a narrow peak, so far identified with a "$d(2380)$" dibaryon, has been observed. We find that the second step $pp→π^{+}d$ is driven by a triangle singularity that determines the...
The goal of the Deuteron Spin Structure experimental program is to obtain the information about two and three nucleon forces, including their spin dependent parts, from dp elastic scattering at the energies between 400 – 2000 MeV and dp breakup reactions with registration of two protons at deuteron energies of 300 – 500 MeV. Experimental and simulated results obtained from fragmentation of...
We present calculations for Dalitz decays of nucleon resonances and hyperons, based on a covariant quark model, where the contribution of the quark core is complemented with contributions from the meson cloud.
The model was originally developed for the calculation of transition form factors in the electroproduction of nucleon resonances and transitions between hyperon states, in the spacelike...
