Beyond Rainbow-Ladder in a covariant three-body Bethe-Salpeter approach: Baryons
arXiv:1402.1013 · doi:10.1051/epjconf/20147304019
Abstract
We report on recent results of a calculation of the nucleon and delta masses in a covariant bound-state approach, where to the simple rainbow-ladder gluon-exchange interaction kernel we add a pion-exchange contribution to account for pion cloud effects. We observe good agreement with lattice data at large pion masses. At the physical point our masses are too large by about five percent, signaling the need for more structure in the gluon part of the interaction.
4 pages, 3 figures, Proceedings of The 13th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2013), Rome
References in corpus (7)
- Sketching the Bethe-Salpeter kernel
- Dressed-quark anomalous magnetic moments
- Hadronic unquenching effects in the quark propagator
- Beyond the rainbow: effects from pion back-coupling
- Hadron Spectroscopy with Dynamical Chirally Improved Fermions
- Pion cloud effects on baryon masses
- Lattice Calculations of Nucleon Electromagnetic Form Factors at Large Momentum Transfer