English

Baryon structure from Lattice QCD

High Energy Physics - Lattice 2015-05-13 v1 Nuclear Experiment Nuclear Theory

Abstract

We present recent lattice results on the baryon spectrum, nucleon electromagnetic and axial form factors, nucleon to Δ\Delta transition form factors as well as the Δ\Delta electromagnetic form factors. The masses of the low lying baryons and the nucleon form factors are calculated using two degenerate flavors of twisted mass fermions down to pion mass of about 270 MeV. We compare to the results of other collaborations. The nucleon to Δ\Delta transition and Δ\Delta form factors are calculated in a hybrid scheme, which uses staggered sea quarks and domain wall valence quarks. The dominant dipole nucleon to Δ\Delta transition form factor is also evaluated using dynamical domain wall fermions. The transverse density distributions of the Δ\Delta in the infinite momentum frame are extracted using the form factors determined from lattice QCD.

Keywords

Cite

@article{arxiv.0906.4137,
  title  = {Baryon structure from Lattice QCD},
  author = {C. Alexandrou},
  journal= {arXiv preprint arXiv:0906.4137},
  year   = {2015}
}

Comments

Invited talk at the Workshop on the Physics of excited nucleons NSTAR2009, Beijing, April 19-22, 2009, 9 pages

R2 v1 2026-06-21T13:16:39.625Z