# The 12th International Workshop on the Physics of Excited Nucleons

10-14 June 2019
Bonn, Campus Poppelsdorf
Europe/Zurich timezone

## Low-energy pion-nuclen scattering and the Delta resonance in lattice QCD

12 Jun 2019, 14:30
30m
HS 5

### HS 5

Baryon spectrum and structure from first principles of QCD

### Speaker

Marcus Petschlies (HISKP, Bonn University)

### Description

We report on our investigation of low-energy pion-nucleon scattering from lattice QCD with Wilson-type fermions.
Our focus is on the isospin $I=3/2$ channel, which couples to the Delta resonance.
We discuss our calculations aiming at the extraction of the Delta resonance mass, width and effective coupling at pion mass
$250$ MeV and the physical point, using the L\"uscher finite-volume method to extract the phase shift $\delta_{J=3/2,l=1}$.

### Primary author

Marcus Petschlies (HISKP, Bonn University)