31 July 2023 to 4 August 2023
America/Chicago timezone

Lattice QCD studies of the $\Delta$ baryon resonance and the $K_0^\ast(700)$ and $a_0(980)$ meson resonances

2 Aug 2023, 10:20
20m
Curia II (WH2SW)

Curia II

WH2SW

Speaker

Sarah Skinner (Carnegie Mellon University)

Description

Studies of the $\Delta$ baryon resonance and the $K_0^\ast(700)$ and $a_0(980)$ meson resonances using $N_f=2+1$ lattice QCD for pion masses near 200 MeV are presented. The role of tetraquark operators in the mesonic systems is detailed. The $s$-wave scattering lengths for both the $I=1/2$ $N \pi$ and $I=3/2$ $N \pi$ channels and properties of the $\Delta$ resonance are identified from the finite-volume energy levels of the lattice simulation.

Topical area Hadronic and Nuclear Spectrum and Interactions

Primary author

Sarah Skinner (Carnegie Mellon University)

Co-authors

Dr Andrew Hanlon (Physics Department, Brookhaven National Laboratory) Amy Nicholson (UNC, Chapel Hill) Andre Walker-Loud (LBNL) Dr Ben Hörz (Nuclear Science Division, Lawrence Berkeley National Laboratory) Colin Morningstar (Carnegie Mellon University) Daniel Darvish (Carnegie Mellon University) Fernando Romero-López (MIT) Dr John Bulava (Deutsches Elektronen-Synchrotron DESY) Dr Pavlos Vranas (Nuclear Science Division, Lawrence Berkeley National Laboratory)

Presentation materials