Chiral expansion of the nucleon mass to order q^6
arXiv:hep-ph/0612164 · doi:10.1016/j.physletb.2007.04.034
Abstract
We present the results of a complete two-loop calculation at order q^6 of the nucleon mass in manifestly Lorentz-invariant chiral perturbation theory. The renormalization is performed using the reformulated infrared renormalization, which allows for the treatment of two-loop integrals while preserving all relevant symmetries, in particular chiral symmetry.
6 pages, 2 figures, REVTeX4