The Role of the Roper in Chiral Perturbation Theory

Abstract

We include the Roper excitation of the nucleon in a version of heavy-baryon chiral perturbation theory recently developed for energies around the delta resonance. We find significant improvement in the $P_{11}$ channel.

Version to be published

References in corpus (12)

• Extended Partial-Wave Analysis of piN Scattering Data
• Electromagnetic excitation of the Delta(1232)-resonance
• Chiral Perturbation Theory and Baryon Properties
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Chiral Effective-Field Theory in the Delta(1232) Region: Pion Electroproduction on the Nucleon
• Extraction of P11 resonances from pi N data
• Chiral effective-field theory in the Delta(1232) region: II. radiative pion photoproduction
• $\pi N$ Scattering in the $\Delta (1232)$ Region in an Effective Field Theory
• Chiral corrections to the Roper mass
• Phase-shift analysis of low-energy ${\pi }^{\pm }p$ elastic-scattering data
• Heavy-particle formalism with Foldy-Wouthuysen representation
• The Delta(1232) Resonance in Chiral Effective Field Theory

Cited by in corpus (13)

• Nuclear effective field theory: status and perspectives
• Improved description of the $\pi N$-scattering phenomenology in covariant baryon chiral perturbation theory
• Towards a theory of hadron resonances
• Electromagnetic Transition Form Factors of Baryon Resonances
• On the effect of excited states in lattice calculations of the nucleon axial charge
• The width of the Roper resonance in baryon chiral perturbation theory
• Elastic and inelastic pion-nucleon scattering to fourth order in chiral perturbation theory
• Nuclear Effective Field Theories: Reverberations of the early days
• The Roper Resonance in a finite volume
• Electromagnetic transition form factors of the Roper resonance in baryon chiral perturbation theory
• Another walk through the world of chiral dynamics
• Understanding the 1P- and 2S-wave nucleon resonances within the extended Lee-Friedrichs Model
• Trapped two-nucleon system in energy-dependent effective field theory