2009/06/22 by Constantia Alexandrou, C. Alexandrou · 5 citations
Physics and Astronomy · #Baryon #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice field theory #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-lat #nucl-ex #nucl-th
paper · pdf · doi:10.1088/1674-1137/33/12/008
published in Chinese Physics C 33(12), 1093-1101 (IOP Publishing) · Invited talk at the Workshop on the Physics of excited nucleons NSTAR2009, Beijing, April 19-22, 2009, 9 pages
arxiv created 2009/06/22 · openalex publication_date 2009/12/01 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present recent lattice results on the baryon spectrum, nucleon electromagnetic and axial form factors, nucleon to Δ transition form factors as well as the Δ 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 transition and Δ form factors are calculated in a hybrid scheme, which uses staggered sea quarks and domain wall valence quarks. The dominant magnetic dipole nucleon to Δ transition form factor is also evaluated using dynamical domain wall fermions. The transverse density distributions of the Δ in the infinite momentum frame are extracted using the form factors determined from lattice QCD.