Nucleon to $\Delta$ and $\Delta$ form factors in Lattice QCD

Abstract

We present recent lattice QCD results on the electroweak nucleon to $\Delta$ transition and $\Delta$ form factors using dynamical fermion gauge configurations with a lowest pion mass of about 300 MeV, with special emphasis in the determination of the sub-dominant quadrupole $N{\gamma }^{\ast }\to \Delta$ and $\Delta$ electromagnetic form factors.

Invited talk presented at the 8th International Workshop on the Physics of Excited Nucleons May 17-20, 2011, Thomas Jefferson National Accelerator Facility Newport News, Virginia USA. 6 pages and 6 figures

Cited by in corpus (3)

• Relativistic, model-independent, multichannel $2\to 2$ transition amplitudes in a finite volume
• A framework for the calculation of the $\Delta N{\gamma }^{\ast }$ transition form factors on the lattice
• Matrix elements of unstable states