The $\mathit K$-Matrix Approach to the ${{\mathit \Delta}}$-Resonance Mass Splitting and Isospin Violation in Low-Energy ${{\mathit \pi}}{{\mathit N}}$ Scattering
BERNICHA
1996
NP A597 623
Pion-Proton Scattering and Isospin Breaking in the ${{\mathit \Delta}^{0}}$ $−$ ${{\mathit \Delta}^{++}}$ System
ABAEV
1995
ZPHY A352 85
Phase-Shift Analysis of ${{\mathit \pi}}$ ${{\mathit p}}$ Scattering in the Energy Region from 160 to 600 MeV
PEDRONI
1978
NP A300 321
A Study of Charge Independence and Symmetry from ${{\mathit \pi}^{+}}$ and ${{\mathit \pi}^{-}}$ Total Cross Sections on Hydrogen and Deuterium near the 3,3 Resonance