Complex-mass renormalization in hadronic EFT: applicability at two-loop order

Abstract

We discuss the application of the complex-mass scheme to multi-loop diagrams in hadronic effective field theory by considering as an example a two-loop self-energy diagram. We show that the renormalized two-loop diagram satisfies the power counting.

8 pages, 2 figures, version accepted for publication in EPJA

References in corpus (4)

• Infrared regularization for spin-1 fields
• Magnetic moment of the Roper resonance
• The magnetic moment of the ρ-meson
• Complex-mass scheme and perturbative unitarity

Cited by in corpus (5)

• Towards a theory of hadron resonances
• Nucleon-to-Delta transition form factors in chiral effective field theory using the complex-mass scheme
• Electromagnetic transition form factors of the Roper resonance in baryon chiral perturbation theory
• Radiative pion photoproduction in covariant chiral perturbation theory
• Mass and width of the $\Delta (1232)$ resonance using complex-mass renormalization