Conveners
Meson-Nucleon Interactions
- Johann Zmeskal (Stefan Meyer Institute for Subatomic Physics)
Baryon-anti-baryon photoproduction has not been extensively studied at Jefferson Lab energies. At the GlueX Experiment, we observe $\bar{p}p$ and, for the first time, $\overline{\Lambda}\Lambda$ photoproduction (with $\Lambda \to \pi^- p, \overline{\Lambda} \to \pi^+ \overline{p}$) from threshold up to $E_{\gamma}=$ 11.4 GeV. Preliminary spectra from data accumulated during the GlueX Phase-I...
The $K^-pp$ is the most essential system of kaonic nuclei, which are expected to be a doorway to dense matter due to the strong $\bar{K}N$ attraction [1]. To clarify the nature of $K^-pp$, theorists have investigated this three-body system with various approaches for a long time [2]. Those theoretical studies have indicated that the $K^-pp$ should be a resonant state of a meson-baryon-baryon...
We study the effects of the $\Delta$(1232) resonance as an effective degree of freedom in a global analysis of the pion photo-production off nucleons. Cross sections and polarization observables have been calculated for charged and neutral pion channels in relativistic chiral perturbation theory up to third order in the $\delta$ counting. We compare our model with a large database containing...
