MESON2023

Session

Parallel session A6

LMB5

26 Jun 2023, 15:00

Medium lecture hall (A) (Auditorium Maximum)

Conveners

Parallel session A6: Light Mesons and Baryons 5

• Laura Tolos (ICE, Barcelona)

117. N(1520) electromagnetic transition form factors

Di An (Uppsala University)

26/06/2023, 15:00

Parallel

The electromagnetic transition form factors of the nucleon provide important information on the internal structure of hadrons. A model-independent dispersive calculation of the Electromagnetic form factors $N^{*}(1520)\to N$ at low energies will be presented. Taking pion rescattering into consideration, we derived dispersive relations for the $N^{*}(1520)\to N$ TFFs that relate space-like and...

125. \Lambda hyperon in covariant quark model

Zhomart Tyulemissov (INP Kazakhstan)

26/06/2023, 15:20

Parallel

Main modes of $\Lambda$ hyperon was investigated by nonlocal covariant confined quark model. The short-distance effects are induced by five topologies of external and internal weak W± exchange, while long-distance effects are saturated by an inclusion of the so-called pole diagrams with intermediate $1/2^+$ and $1/2^−$ baryon resonances. The contributions from $1/2^+$ resonances are calculated...

108. The reaction $\pi N \to \omega N$ in a dynamical coupled-channel approach

Yu-Fei Wang (Forschungszentrum Jülich)

26/06/2023, 15:40

Parallel

This talk is on a refined investigation on light flavor meson-baryon scatterings, using a dynamical coupled-channel approach, i.e. the Jülich-Bonn model. The previous channel space of $\pi N$, $\pi \Delta$, $\sigma N$, $\rho N$, $\eta N$, $K \Lambda$ and $K \Sigma$ is extended by adding the $\omega N$ final state. The spectra of $N^*$ and $\Delta$ resonances are extracted, based on the result...

188. Forward to finite volume pion-pion scattering

Julian Andres Sanchez Muñoz (IFIC)

26/06/2023, 16:00

Parallel

We study the effect of a finite volume for pion-pion scattering over energy levels and physical observables such as the phase-shift or pion mass. The method to determine the energy levels is done using a finite set of cubic harmonics, which expands our Bether-Salpeter equation (BSE) over a set of irreducible groups of rotations from the octahedral group, giving us a forward classification of...