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Chiral expansion of the nucleon mass to order q6

M. R. Schindler, D. Djukanovic, J. Gegelia, S. Scherer

hep-pharXiv:hep-ph/0612164

Abstract

We present the results of a complete two-loop calculation at order q6 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.

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