The role of the $\Delta (1232)$-resonance in covariant baryon chiral perturbation theory

Abstract

We stress, on theoretical and phenomenological grounds, the importance of the $\Delta (1232)$-resonance in a chiral effective field theory approach applied to the study of $\pi N$ scattering. We show how its inclusion as a dynamical degree of freedom allow us to obtain reliably valuable information from $\pi N$ scattering data.

Contribution to NSTAR 2013, May 27-30, 2013, Peniscola (Spain); 4 pages

References in corpus (5)

• Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry
• Leading SU(3)-breaking corrections to the baryon magnetic moments in Chiral Perturbation Theory
• Improved description of the $\pi N$-scattering phenomenology in covariant baryon chiral perturbation theory
• The chiral quark condensate and pion decay constant in nuclear matter at next-to-leading order
• Baryon Masses and Axial Couplings in the Combined 1/Nc and Chiral Expansions