ODD $Sigma$$-$$lambda$ PARITY AND PION-HYPERON SCATTERING

Journal Article · Wed Nov 01 04:00:00 EST 1961 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.124.945· OSTI ID:4831444

Capps, R H

The static dispersion relations for the S-wave pi - LAMBDA and pi - SIGMA scattering amplitudes are investigated under the assumptions that the dominant forces result from a scalar pi LAMBDA SIGMA interaction, and that multiple meson processes may be ignored. If it is required that the pi - LAMBDA effective range is small, or alternately, that no subtractions be made in the dispersion relation for the denominator function of the pi - LAMBDA amplitude, the pi LAMBDA SIGMA coupling constant is determined to be F/sup 2/ approximates 1.6. However, such a strong interaction leads to an attractive force in the isotopic-spin 2, pi + EPSILON S state that is more than sufficient to produce a bound state. A brief discussion is given of the meaning of this result, and of a possible related mechanism for the 1380-Mev pi - LAMBDA resonanc e. (auth)

• Research Organization: Northwestern Univ., Evanston, Ill.
• NSA Number: NSA-16-003642
• OSTI ID: 4831444
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 124; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BINDING ENERGY
COUPLING CONSTANTS
DISPERSION RELATIONS
DISPERSION THEORY
ELEMENTARY PARTICLES
ENERGY LEVELS
FIELD THEORY
HYPERONS
INTERACTIONS
ISOSPIN
LAMBDA PARTICLES
MESONS
PARITY
PARTICLE MODELS
PHYSICS
PIONS
QUANTUM FIELD THEORY
QUANTUM MECHANICS
RESONANCE
SCATTERING
SCATTERING AMPLITUDE
SIGMA PARTICLES
STRONG INTERACTIONS