Unitarity Corrections to Low-Energy Parameters in Soft-Pion Calculations

S. C. Bhargava; S. N. Biswas; K. C. Gupta; K. Datta

doi:10.1103/PhysRevLett.20.558

Unitarity Corrections to Low-Energy Parameters in Soft-Pion Calculations

S. C. Bhargava, S. N. Biswas, K. C. Gupta, and K. Datta

Phys. Rev. Lett. 20, 558 – Published 11 March 1968

Abstract

We unitarize the results of soft-pion current-algebra calculations of low-energy parameters for $s$ -wave pion-nucleon scattering in the $I = \frac{1}{2}$ channel, using the $\frac{N}{D}$ formalism. We isolate clearly corrections arising from unitarity, off-shell kinematics, and off-shell dynamics.

DOI:https://doi.org/10.1103/PhysRevLett.20.558