Baryonic Fixed Poles in Meson-Baryon Scattering

1 February 1971

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 3 (3) , 747-755
https://doi.org/10.1103/physrevd.3.747

Abstract

By using a fixed-pole sum rule, it is established that there is a fixed pole at

J = - \frac{1}{2}

in the

π N

partial wave amplitude containing the nucleon trajectory. Whether the dip at

u = - 0.13

V^{2}

in backward

π^{+} p

scattering is due to a nucleon wrong-signature nonsense zero then depends on how this fixed pole and the nucleon pole combine. A class of meson-baryon amplitudes expected to be free of nonsense fixed poles is identified.

Keywords

This publication has 36 references indexed in Scilit:

Measurement of the Reaction $π^{+} p \to K^{+} Σ^{+}$ at Large Momentum Transfers
Physical Review Letters, 1970
The Reaction $π^{-} p \to n π^{0}$ in the Backward Hemisphere at 6 GeV/c
Physical Review Letters, 1970
Study of the Reaction $K^{-} n \to Λ π^{-}$ at 3.9 and 3.6 GeV/c: Test of Exchange Degeneracy in the $t$ region and an observation of a Backward Peak in the $u$ Region
Physical Review Letters, 1969
Observation of Regge Effects in the Reaction $π^{+} p \to π^{0} Δ^{+ +}$
Physical Review Letters, 1969
Study of the reactions K−n → Λπ−andK−n → Σoπo at 3 GeV/c
Nuclear Physics B, 1969
Regge-Pole Model with Cuts Generated by Absorption for the Reaction $π^{+} n \to ω p$
Physical Review Letters, 1968
Kp and πp backward elastic scattering at 5.2 and 6.9 GeV/c
Physics Letters B, 1968
Measurements of $π^{0}$ and $η^{0}$ Photoproduction at Incident Gamma-Ray Energies of 6.0-17.8 GeV
Physical Review Letters, 1968
Regge-Pole Model for High-Energy Backward $π^{\pm} p$ Scattering
Physical Review B, 1967
Association between the Dip in the $π^{-} p \to π^{0} n$ High-Energy Angular Distribution and the Zero of the $ρ$ Trajectory
Physical Review B, 1966