Infrared regularization of baryon chiral perturbation theory reformulated

摘要

We formulate the infrared regularization of Becher and Leutwyler in a form analogous to our recently proposed extended on-mass-shell renormalization. In our formulation, IR regularization can be applied to multi-loop diagrams with an arbitrary number of particles with arbitrary masses. (C) 2004 Published by Elsevier B.V.