4 papers
Schwinger functions and light-quark bound states, and sigma terms
A. Hoell, P. Maris, C. D. Roberts +1
We explore the viability of using solely spacelike information about a Schwinger function to extract properties of bound states. In a concrete example it is not possible to determi…
Sigma Terms of Light-Quark Hadrons
V. V. Flambaum, A. Hoell, P. Jaikumar +2
A calculation of the current-quark mass dependence of hadron masses can help in using observational data to place constraints on the variation of nature's fundamental parameters. A…
On Nucleon Electromagnetic Form Factors: A Pre'cis
A Hoell, R. Alkofer, M. Kloker +3
Electron scattering at large Q^2 probes a nucleon's quark core. This core's contribution to electromagnetic form factors may be calculated using Poincare' covariant Faddeev amplitu…
Regarding proton form factors
J. C. R. Bloch, A. Krassnigg, C. D. Roberts
The proton's elastic electromagnetic form factors are calculated using an Ansatz for the nucleon's Poincare' covariant Faddeev amplitude that only retains scalar diquark correlatio…