Pion-nucleon scattering in the P/sub 11/ channel

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.26.1148· OSTI ID:6713775

Morioka, S; Afnan, I R

We present a parametrization of the ..pi..-N interaction in the P/sub 11/ channel in which the amplitude is the sum of a pole part and a non-pole part (t = t/sub pole/+t/sub np/) and satisfies two-body unitarity. Here t/sub pole/ has both the nucleon propagator and the ..pi..NN vertex dressed. The final amplitude fits the scattering length and low energy ..pi..-N phase shifts (T/sub ..pi..//sup lab/<300 MeV). We study the effect of a resonance in t/sub np/ on the phase shifts, ..pi..NN coupling constant and the off-shell behavior of the amplitude.

• Research Organization: School of Physical Sciences, The Flinders University of South Australia, Bedford Park, South Australia, 5042, Australia
• OSTI ID: 6713775
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 26:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645206* -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED-PARTICLE REACTIONS
COUPLING CONSTANTS
CROSS SECTIONS
DIMENSIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
LENGTH
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PHASE SHIFT
PION REACTIONS
PION-NUCLEON INTERACTIONS
PROPAGATOR
RENORMALIZATION
SCATTERING LENGTHS
UNITARITY