πN scattering and electromagnetic corrections in the perturbative chiral quark model

2001/08/31 by V. E. Lyubovitskij, Valery E. Lyubovitskij, Th. Gutsche +2 · 3 citations
Physics and Astronomy · #Amplitude #Chiral perturbation theory #Electromagnetic mass #High-Energy Particle Collisions Research #Isospin #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Radiative transfer #Scattering #Scattering amplitude #hep-ph

paper · pdf · doi:10.1016/s0370-2693(01)01142-x

published as Phys.Lett. B520 (2001) 204-212 · 12 pages, 2 figures

arxiv created 2001/09/24 · openalex publication_date 2001/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We apply the perturbative chiral quark model to give predictions for the electromagnetic O ( p 2 ) low-energy couplings of the ChPT effective Lagrangian that define the electromagnetic mass shifts of nucleons and first-order ( e 2 ) radiative corrections to the πN scattering amplitude. We estimate the leading isospin-breaking correction to the strong energy shift of the π − p atom in the 1 s state, which is relevant for the experiment “Pionic Hydrogen” at PSI.

Citations

• The axial vector current in beta decay
• Quark masses

Cited by

• Chiral susceptibility and chiral phase transition in Nambu–Jona-Lasinio model
• Strange nucleon form factors in the perturbative chiral quark model
• Meson cloud contributions to baryon axial form factors