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Infrared regularization of baryon chiral perturbation theory reformulated

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arxiv hep-ph/0309005 v1 pith:M33HIWFI submitted 2003-08-31 hep-ph nucl-th

classification hep-phnucl-th
keywords regularizationarbitraryinfraredanalogousappliedbaryonbecherchiral
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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 straightforwardly to multi-loop diagrams with an arbitrary number of particles with arbitrary masses.

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  1. Pion-Nucleon Scattering in Baryon Chiral Perturbation Theory combined with the ${ 1/N_c}$ Expansion

    hep-ph 2025-06 conditional novelty 6.0 of 10

    A one-loop chiral-plus-1/Nc effective field theory with the nucleon and Delta in a spin-flavor multiplet is fitted to SAID pion-nucleon scattering data up to 350 MeV.

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