2000 character limit reached
Covariant propagator and chiral power counting
Published 2 Sep 2020 in hep-th, hep-ph, and nucl-th | (2009.00753v3)
Abstract: Some one-loop diagrams with one and two external baryons/nucleons are revisited using covariant baryon propagators in chiral effective theory. We showed that it is enough to separate and subtract all the local terms that violate chiral power counting to recover chiral power counting, no need to introduce extra operations. The structures of leading chiral corrections and IR enhancement or threshold effects are 'stable' or persist as long as covariant propagators are employed for all particles.
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