Juelich hyperon-nucleon model revisited

Journal Article · Sat Oct 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.044005· OSTI ID:20699044

Haidenbauer, J ^[1]; Meissner, Ulf-G ^[1]

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1. Institut fuer Kernphysik (Theorie), Forschungszentrum Juelich, D-52425 Juelich (Germany)

A one-boson-exchange model for the hyperon-nucleon ({lambda}N,{sigma}N) interaction is presented. The model incorporates the standard one boson exchanges of the lowest pseudoscalar and vector meson multiplets with coupling constants fixed by SU(6) flavor symmetry relations. As the main new feature of the model, the contributions in the scalar-isoscalar ({sigma}) and vector-isovector ({rho}) exchange channels are now constrained by a microscopic model of correlated {pi}{pi} and KK exchange. Additional short-ranged ingredients of the model in the scalar-isovector (a{sub 0}) and scalar-isospin-1/2 ({kappa}) channels are likewise viewed as arising from meson-meson correlations but are treated phenomenologically. With this model a satisfactory reproduction of the available hyperon-nucleon data can be achieved.

• OSTI ID: 20699044
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
COUPLING CONSTANTS
FLAVOR MODEL
ISOSPIN
ISOVECTORS
LAMBDA BARYONS
NUCLEAR FORCES
NUCLEON-HYPERON INTERACTIONS
NUCLEONS
OBE MODEL
RHO-770 MESONS
SCALARS
SU-6 GROUPS
SYMMETRY