Elastic and transition form factors of the \Delta(1232)

Understand

Predictions obtained with a confining, symmetry-preserving treatment of a vector-vector contact interaction at leading-order in a widely used truncation of QCD's Dyson-Schwinger equations are presented for \Delta and \Omega baryon elastic form factors and the \gamma N -> \Delta transition form factors.

• This simple framework produces results that are practically indistinguishable from the best otherwise available, an outcome which highlights that the key to describing many features of baryons and unifying them with the properties of mesons is a veracious expression of dynamical chiral symmetry breaking in the hadron bound-state problem.
• The following specific results are of particular interest.
• The \Delta elastic form factors are very sensitive to m_\Delta.