Determination of the NN. pi. coupling constants in NN partial-wave analyses

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.R1258· OSTI ID:5243926

Klomp, R A.M.; Stoks, V G.J.; de Swart, J J ^[1]

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1. Institute for Theoretical Physics, University of Nijmegen, Nijmegen (The Netherlands)

The {ital NN}{pi} coupling constants are extracted in {ital NN} partial-wave analyses. The data base contains all {ital pp} and {ital np} scattering data below {ital T}{sub lab}=350 MeV. Introducing different coupling constants at the different {ital NN}{pi} vertices, at the pion pole we find for the {ital pp}{pi}{sup 0} coupling {ital f}{sub {ital p}}{sup 2}=0.0751(6), for the {ital nn}{pi}{sup 0} coupling {ital f}{sub {ital n}}{sup 2}=0.075(2), and for the charged-pion coupling {ital f}{sub {ital c}}{sup 2}=0.0741(5). These results allow only small charge-independence-breaking effects in the {ital NN}{pi} coupling constants. If we assume charge independence, we find {ital f}{sup 2}=0.0749(4). The value found for {ital f}{sub {ital c}}{sup 2} is in agreement with the determination in a recent VPI SU analysis of the {pi}{ital N} scattering data, and with its determination in an analysis of the charge-exchange reaction {ital {bar p}p}{r arrow}{ital {bar n}n}.

• OSTI ID: 5243926
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
CHARGED-PARTICLE REACTIONS
COUPLING CONSTANTS
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
PARTICLE INTERACTIONS
PION REACTIONS
POTENTIALS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
SCATTERING